This is a table of type bigram and their frequencies. Use it to search & browse the list to learn more about your study carrel.
bigram | frequency |
---|---|
solar system | 1224 |
milky way | 625 |
let us | 507 |
naked eye | 440 |
one hundred | 388 |
heavenly bodies | 375 |
years ago | 372 |
fixed stars | 367 |
united states | 334 |
sir william | 317 |
double stars | 314 |
astronomer royal | 287 |
per second | 259 |
one side | 258 |
sir john | 253 |
thousand miles | 246 |
royal society | 241 |
two stars | 237 |
new york | 233 |
two hundred | 226 |
full moon | 218 |
miles per | 217 |
royal observatory | 209 |
four hours | 206 |
million miles | 206 |
many years | 198 |
new star | 195 |
take place | 195 |
john herschel | 194 |
total eclipse | 194 |
william herschel | 192 |
thousand years | 190 |
three hundred | 188 |
straight line | 184 |
hundred miles | 183 |
much less | 183 |
hundred years | 173 |
years later | 172 |
present time | 171 |
three years | 170 |
solar spectrum | 169 |
much greater | 167 |
first magnitude | 164 |
well known | 161 |
magnitude star | 161 |
great bear | 158 |
one another | 157 |
nebular hypothesis | 157 |
southern hemisphere | 157 |
minor planets | 154 |
per cent | 153 |
central mountain | 153 |
pole star | 151 |
took place | 151 |
astronomical society | 148 |
present day | 145 |
celestial sphere | 142 |
cubic miles | 142 |
great britain | 141 |
le verrier | 140 |
mean distance | 139 |
proper motions | 137 |
double star | 137 |
centrifugal force | 136 |
variable stars | 134 |
nautical almanac | 133 |
dark lines | 132 |
north pole | 132 |
two years | 132 |
every one | 130 |
lick observatory | 130 |
two bodies | 130 |
one time | 129 |
crown vo | 128 |
tycho brahe | 128 |
five years | 127 |
much larger | 127 |
prime meridian | 127 |
stellar universe | 126 |
bright lines | 125 |
bright stars | 125 |
long time | 124 |
greenwich observatory | 123 |
great nebula | 123 |
first place | 121 |
taken place | 121 |
northern hemisphere | 120 |
right ascension | 120 |
tells us | 119 |
may th | 118 |
bright star | 118 |
observations made | 118 |
right angles | 118 |
zodiacal light | 117 |
three times | 117 |
thousand times | 116 |
great number | 116 |
royal astronomical | 115 |
new moon | 115 |
different parts | 115 |
proper motion | 114 |
every part | 114 |
inch telescope | 114 |
magnifying power | 114 |
great comet | 113 |
great deal | 113 |
june th | 113 |
far beyond | 112 |
planetary system | 112 |
first time | 111 |
de la | 110 |
good hope | 109 |
opposite side | 108 |
four years | 107 |
solar eclipse | 107 |
powerful telescopes | 107 |
great circle | 107 |
astronomical observations | 104 |
nineteenth century | 104 |
one day | 103 |
takes place | 103 |
copernican system | 103 |
five hundred | 103 |
good deal | 102 |
will see | 101 |
will find | 101 |
celestial bodies | 101 |
feet high | 101 |
revolve around | 100 |
second magnitude | 100 |
august th | 99 |
animal life | 98 |
solar heat | 97 |
four times | 96 |
short time | 96 |
opposite direction | 95 |
shall find | 95 |
miss mitchell | 95 |
focal length | 95 |
one star | 95 |
every day | 94 |
greater part | 94 |
much smaller | 94 |
will show | 94 |
straight lines | 93 |
four hundred | 93 |
lunar theory | 92 |
small stars | 92 |
revolving round | 91 |
one direction | 91 |
hundred times | 91 |
shall see | 91 |
comptes rendus | 91 |
new planet | 90 |
powerful telescope | 90 |
great distance | 89 |
july th | 88 |
two thousand | 88 |
transit instrument | 88 |
far away | 88 |
many times | 88 |
million years | 88 |
apparent size | 87 |
now known | 87 |
nearly equal | 87 |
nebulous matter | 87 |
shooting stars | 87 |
mount wilson | 87 |
set forth | 87 |
tell us | 86 |
sir george | 86 |
professor newcomb | 86 |
years old | 86 |
twenty years | 86 |
thirty years | 86 |
give us | 85 |
november th | 85 |
meteoric stones | 85 |
square miles | 85 |
local time | 84 |
periodic time | 84 |
either side | 83 |
transit circle | 83 |
close together | 82 |
nearly circular | 82 |
one point | 81 |
revolving around | 81 |
long ago | 81 |
will appear | 81 |
one second | 81 |
three days | 81 |
alpha centauri | 80 |
faint stars | 80 |
enable us | 80 |
great pyramid | 80 |
spiral nebula | 80 |
much light | 80 |
large number | 80 |
ursa major | 79 |
ten years | 79 |
turned towards | 79 |
fifty years | 79 |
several years | 79 |
ten times | 78 |
six years | 78 |
universal gravitation | 78 |
human race | 78 |
heavenly body | 78 |
fixed star | 78 |
hundred thousand | 77 |
british association | 77 |
great telescope | 77 |
great work | 77 |
may well | 76 |
five miles | 76 |
reflecting telescope | 76 |
small telescope | 76 |
revolution around | 76 |
six months | 76 |
two hours | 76 |
every year | 75 |
every direction | 75 |
sir isaac | 75 |
one thousand | 74 |
one half | 74 |
south pole | 74 |
will take | 74 |
lunar surface | 74 |
chapter ii | 74 |
left behind | 73 |
almost exactly | 73 |
brightest star | 73 |
may say | 73 |
whole mass | 72 |
third magnitude | 72 |
towards us | 72 |
miles across | 72 |
gives us | 72 |
two planets | 72 |
lord rosse | 72 |
new stars | 72 |
times less | 72 |
miles long | 72 |
like manner | 71 |
miles away | 71 |
trinity college | 71 |
harvard college | 71 |
universal day | 71 |
dear sir | 71 |
almost every | 70 |
one end | 69 |
mean density | 69 |
yerkes observatory | 69 |
many others | 69 |
three stars | 69 |
vernal equinox | 69 |
lunar crater | 68 |
first sight | 68 |
fifteen years | 68 |
apparent diameter | 68 |
sun will | 68 |
middle ages | 68 |
earth must | 68 |
seven years | 67 |
now know | 67 |
star clusters | 67 |
times greater | 67 |
us now | 67 |
white light | 67 |
inches aperture | 67 |
unaided eye | 67 |
sixth magnitude | 67 |
cambridge observatory | 67 |
relative positions | 66 |
will probably | 66 |
organic life | 66 |
chapter iii | 66 |
photographic plate | 65 |
little bear | 65 |
several times | 65 |
one degree | 65 |
orion nebula | 65 |
variable star | 65 |
celestial objects | 65 |
stellar system | 65 |
two points | 65 |
one part | 65 |
never seen | 64 |
solar surface | 64 |
something like | 64 |
will give | 64 |
solid matter | 64 |
taking place | 63 |
red spot | 63 |
will now | 63 |
isaac newton | 63 |
scientific men | 63 |
two great | 63 |
great interest | 63 |
even though | 63 |
polar caps | 63 |
many cases | 63 |
polar axis | 63 |
planetary orbits | 63 |
greatest density | 63 |
large enough | 63 |
three months | 63 |
mare imbrium | 62 |
cosmic matter | 62 |
solar atmosphere | 62 |
chapter iv | 62 |
seven days | 62 |
around us | 62 |
forty years | 62 |
one place | 62 |
hundred feet | 62 |
ten thousand | 62 |
line joining | 62 |
see plate | 61 |
universal time | 61 |
modern astronomy | 61 |
may seem | 61 |
much nearer | 61 |
copernican theory | 60 |
paris observatory | 60 |
small bodies | 60 |
already mentioned | 60 |
foot telescope | 60 |
greater distance | 60 |
far greater | 60 |
five degrees | 60 |
sun must | 59 |
four days | 59 |
magnitude stars | 59 |
revolve round | 59 |
celestial equator | 59 |
sir david | 59 |
bright crater | 59 |
one might | 59 |
physical constitution | 59 |
brightest stars | 59 |
one may | 59 |
temporary stars | 59 |
ptolemaic system | 59 |
modern times | 59 |
astronomical instruments | 59 |
first seen | 59 |
th part | 58 |
eight years | 58 |
us suppose | 58 |
hollow sphere | 58 |
november meteors | 58 |
large part | 58 |
illustration fig | 58 |
many stars | 58 |
five thousand | 57 |
five times | 57 |
inch refractor | 57 |
three hours | 57 |
angular distance | 57 |
see also | 57 |
long period | 57 |
professor young | 57 |
various parts | 57 |
less dense | 56 |
may now | 56 |
must therefore | 56 |
aqueous vapor | 56 |
refracting telescope | 56 |
stars may | 56 |
binary stars | 55 |
royal vo | 55 |
modern science | 55 |
comparatively small | 55 |
solar systems | 55 |
great importance | 55 |
revolves around | 54 |
quite different | 54 |
perihelion passage | 54 |
will therefore | 54 |
much like | 54 |
miles high | 54 |
square inch | 54 |
object glass | 54 |
magnitudes six | 54 |
spectrum analysis | 54 |
small star | 54 |
young man | 54 |
many millions | 53 |
sir robert | 53 |
every star | 53 |
outer planets | 53 |
ever since | 53 |
common centre | 53 |
next day | 53 |
two centuries | 53 |
attractive force | 53 |
third law | 53 |
see fig | 53 |
twenty miles | 53 |
present state | 53 |
solar spots | 53 |
five days | 53 |
stars visible | 52 |
mean temperature | 52 |
inferior conjunction | 52 |
polar regions | 52 |
orbital motion | 52 |
whole earth | 52 |
tidal friction | 52 |
one way | 52 |
greater number | 52 |
twelve hours | 51 |
fourth magnitude | 51 |
original nebula | 51 |
already seen | 51 |
sir norman | 51 |
equatorial regions | 51 |
even now | 50 |
dark body | 50 |
great majority | 50 |
practical astronomy | 50 |
six hundred | 50 |
easily seen | 50 |
least one | 50 |
well seen | 50 |
moon must | 50 |
two days | 50 |
june report | 49 |
shows us | 49 |
mural circle | 49 |
question whether | 49 |
must also | 49 |
resisting medium | 49 |
chapter vi | 49 |
continuous spectrum | 49 |
visible surface | 49 |
nearest star | 49 |
great planet | 49 |
little doubt | 49 |
totally different | 49 |
last century | 49 |
brighter stars | 49 |
enables us | 49 |
many thousands | 49 |
star cluster | 49 |
et seq | 49 |
may also | 48 |
carbonic acid | 48 |
one planet | 48 |
great astronomer | 48 |
astronomical observation | 48 |
six miles | 48 |
large proportion | 48 |
total eclipses | 48 |
dark ring | 48 |
crossley reflector | 48 |
seventeenth century | 48 |
astronomical work | 48 |
thousandth part | 48 |
radius vector | 48 |
evening star | 48 |
apparent motion | 48 |
planet mars | 48 |
living things | 48 |
distance apart | 48 |
great discovery | 48 |
central body | 47 |
one occasion | 47 |
three miles | 47 |
four miles | 47 |
will make | 47 |
multiple stars | 47 |
great extent | 47 |
foot reflector | 47 |
opposite sides | 47 |
reversing layer | 47 |
must always | 47 |
faint star | 47 |
northern crown | 47 |
six times | 47 |
private history | 47 |
six thousand | 47 |
sun may | 47 |
ten days | 47 |
following year | 46 |
canes venatici | 46 |
reader will | 46 |
large telescopes | 46 |
three thousand | 46 |
demy vo | 46 |
solar corona | 46 |
solar energy | 46 |
first quarter | 46 |
will enable | 46 |
celestial body | 46 |
good telescope | 46 |
magnetic field | 46 |
starry heavens | 46 |
may see | 46 |
telescopic power | 46 |
planetary motions | 46 |
directed towards | 45 |
reflected light | 45 |
will always | 45 |
eleven years | 45 |
whole system | 45 |
initial meridian | 45 |
small planets | 45 |
put forward | 45 |
outer edge | 45 |
little less | 45 |
mean time | 45 |
spectral lines | 45 |
stellar parallax | 45 |
may take | 45 |
solar eclipses | 45 |
nothing else | 45 |
mare serenitatis | 44 |
nearly three | 44 |
fifth magnitude | 44 |
six feet | 44 |
will continue | 44 |
present century | 44 |
chapter vii | 44 |
fifty miles | 44 |
great difficulty | 44 |
long since | 44 |
seven stars | 44 |
christian era | 44 |
north america | 44 |
every point | 44 |
march th | 44 |
whole solar | 44 |
temporary star | 44 |
inferior planet | 44 |
entirely different | 44 |
feet long | 44 |
human mind | 43 |
larger planets | 43 |
hundred millions | 43 |
april th | 43 |
average distance | 43 |
physical astronomy | 43 |
two parts | 43 |
already referred | 43 |
one year | 43 |
ursa minor | 43 |
naval observatory | 43 |
might well | 43 |
important part | 43 |
good reason | 43 |
thousand feet | 43 |
line drawn | 43 |
red star | 43 |
old man | 43 |
zodiacal constellations | 43 |
put together | 43 |
college observatory | 43 |
intelligent beings | 42 |
long enough | 42 |
visible universe | 42 |
must necessarily | 42 |
hundred million | 42 |
earth around | 42 |
look like | 42 |
professor pickering | 42 |
four thousand | 42 |
luminous matter | 42 |
little crater | 42 |
will come | 42 |
high temperature | 42 |
nearly half | 42 |
great many | 42 |
still greater | 42 |
sometimes called | 42 |
canis major | 42 |
norman lockyer | 42 |
schmidt shows | 42 |
earth moves | 41 |
planet must | 41 |
planet saturn | 41 |
bright ring | 41 |
late professor | 41 |
half times | 41 |
sun spots | 41 |
complete revolution | 41 |
one thing | 41 |
recent years | 41 |
total solar | 41 |
principal stars | 41 |
new system | 41 |
solar light | 41 |
eight minutes | 41 |
go back | 41 |
stars forming | 41 |
near enough | 41 |
professor proctor | 41 |
know nothing | 41 |
attractive power | 41 |
george airy | 40 |
different times | 40 |
planetary motion | 40 |
high degree | 40 |
four minutes | 40 |
professor henry | 40 |
stars whose | 40 |
professor challis | 40 |
meteoric matter | 40 |
astronomical observatory | 40 |
next year | 40 |
neutral meridian | 40 |
relative distances | 40 |
another way | 40 |
one case | 40 |
per square | 40 |
five minutes | 40 |
two bright | 40 |
long series | 40 |
extra crown | 40 |
one great | 40 |
copernican doctrine | 40 |
common center | 40 |
red stars | 40 |
de morgan | 40 |
far less | 40 |
eighteenth century | 40 |
like ours | 40 |
every night | 40 |
ninth magnitude | 40 |
will never | 39 |
two minutes | 39 |
natural history | 39 |
binary systems | 39 |
total number | 39 |
short period | 39 |
ever seen | 39 |
moon will | 39 |
may therefore | 39 |
atmospheric pressure | 39 |
much longer | 39 |
will also | 39 |
parallel lines | 39 |
andromeda nebula | 39 |
short distance | 39 |
soon found | 39 |
give rise | 39 |
atmospheric conditions | 39 |
may call | 39 |
absolute temperature | 39 |
periodic times | 39 |
small part | 39 |
may add | 39 |
nearly two | 39 |
nebular theory | 39 |
small crater | 39 |
william huggins | 39 |
autumnal equinox | 39 |
celestial motions | 39 |
superior planets | 39 |
lord kelvin | 39 |
absolute zero | 39 |
twelve years | 39 |
philosophical transactions | 39 |
days later | 38 |
human eye | 38 |
ten hours | 38 |
liquid state | 38 |
revolution round | 38 |
many centuries | 38 |
much attention | 38 |
much time | 38 |
telescope will | 38 |
ten miles | 38 |
tenth magnitude | 38 |
just mentioned | 38 |
large telescope | 38 |
lead us | 38 |
great telescopes | 38 |
dark bodies | 38 |
bright little | 38 |
generally accepted | 38 |
diurnal revolution | 38 |
will become | 38 |
reach us | 38 |
sixty years | 38 |
due south | 38 |
nova persei | 38 |
de revolutionibus | 37 |
stars appear | 37 |
two months | 37 |
hydrogen lines | 37 |
specific gravity | 37 |
solar parallax | 37 |
astronomical discoveries | 37 |
french astronomer | 37 |
philosophical society | 37 |
two different | 37 |
different kinds | 37 |
axial rotation | 37 |
planetary bodies | 37 |
lick telescope | 37 |
two miles | 37 |
following letter | 37 |
one hand | 37 |
great part | 37 |
professor adams | 37 |
seven miles | 37 |
grand duke | 37 |
living creatures | 37 |
four feet | 37 |
minor planet | 37 |
corona borealis | 37 |
great planets | 37 |
central mass | 37 |
seven times | 37 |
terrestrial magnetism | 37 |
careful study | 37 |
cosmical axis | 37 |
small portion | 37 |
passed away | 37 |
national observatory | 37 |
planet jupiter | 37 |
stars will | 37 |
spectroscopic binaries | 37 |
many astronomers | 37 |
equal times | 37 |
anything else | 37 |
th century | 36 |
great variety | 36 |
professor peirce | 36 |
centuries ago | 36 |
may perhaps | 36 |
seven hundred | 36 |
two opposite | 36 |
hydrogen gas | 36 |
now see | 36 |
nearly one | 36 |
four satellites | 36 |
chapter viii | 36 |
summer solstice | 36 |
civil war | 36 |
component stars | 36 |
nearest approach | 36 |
inner edge | 36 |
intense heat | 36 |
small craters | 36 |
first discovered | 36 |
may appear | 36 |
whole surface | 36 |
apparent movements | 36 |
scientific world | 35 |
globular clusters | 35 |
last night | 35 |
central sun | 35 |
perhaps even | 35 |
leads us | 35 |
still less | 35 |
given us | 35 |
sixty miles | 35 |
greenwich time | 35 |
canis minor | 35 |
lunar eclipse | 35 |
december th | 35 |
scientific work | 35 |
whole world | 35 |
four stars | 35 |
great circles | 35 |
first step | 35 |
interesting objects | 35 |
different planets | 35 |
holy office | 35 |
different places | 35 |
planet venus | 35 |
half years | 35 |
almost entirely | 35 |
many miles | 35 |
half hours | 35 |
magnitudes five | 35 |
opposite directions | 35 |
different observers | 35 |
low sun | 35 |
nine years | 35 |
must remember | 35 |
much better | 35 |
heat received | 35 |
highest degree | 35 |
mount hamilton | 34 |
may find | 34 |
solar nebula | 34 |
minute stars | 34 |
century ago | 34 |
distant objects | 34 |
inch glass | 34 |
two large | 34 |
greatest elongation | 34 |
best known | 34 |
chemical elements | 34 |
coast survey | 34 |
revolves round | 34 |
smaller ones | 34 |
become visible | 34 |
years since | 34 |
infinite space | 34 |
father secchi | 34 |
eight times | 34 |
every side | 34 |
fraunhofer lines | 34 |
mr peacock | 34 |
inner slope | 34 |
lowell observatory | 34 |
stellar spectra | 34 |
magnifying powers | 34 |
two lines | 34 |
per hour | 34 |
small fraction | 34 |
various planets | 34 |
diurnal motion | 34 |
miles deep | 33 |
eighth magnitude | 33 |
mare crisium | 33 |
fairly well | 33 |
brother william | 33 |
large scale | 33 |
five hours | 33 |
right hand | 33 |
clear night | 33 |
already described | 33 |
anything like | 33 |
solid body | 33 |
stars near | 33 |
inch reflector | 33 |
two distinct | 33 |
ninety degrees | 33 |
general strachey | 33 |
david gill | 33 |
repulsive force | 33 |
thousand stars | 33 |
individual stars | 33 |
must now | 33 |
per minute | 33 |
great discoveries | 33 |
comparatively near | 33 |
morning terminator | 33 |
caroline herschel | 33 |
whatever may | 33 |
motion round | 33 |
mutual attraction | 33 |
will pass | 33 |
one revolution | 33 |
may possibly | 33 |
bright enough | 33 |
place among | 33 |
eight days | 33 |
western horizon | 33 |
certain extent | 32 |
early part | 32 |
dusky ring | 32 |
central peak | 32 |
every thing | 32 |
great mass | 32 |
best seen | 32 |
good fortune | 32 |
magnetic needle | 32 |
celestial phenomena | 32 |
circle round | 32 |
rotary motion | 32 |
see whether | 32 |
several days | 32 |
whole universe | 32 |
certain stars | 32 |
william thomson | 32 |
already stated | 32 |
sidereal system | 32 |
highly probable | 32 |
two suns | 32 |
different distances | 32 |
curious fact | 32 |
rotation period | 32 |
lunar craters | 32 |
physical conditions | 32 |
elliptic orbit | 32 |
greatest distance | 32 |
dark spots | 32 |
star will | 32 |
partial eclipse | 32 |
la rue | 32 |
inferior planets | 32 |
six days | 32 |
human life | 32 |
latter part | 32 |
longitude deg | 32 |
several planets | 32 |
last year | 32 |
eight thousand | 32 |
chapter ix | 32 |
two others | 32 |
alvan clark | 32 |
major axis | 32 |
vs vf | 32 |
six hours | 31 |
twenty minutes | 31 |
distant stars | 31 |
material substance | 31 |
central portion | 31 |
small one | 31 |
brought together | 31 |
much heat | 31 |
reflecting telescopes | 31 |
low power | 31 |
last quarter | 31 |
civil day | 31 |
large one | 31 |
equal areas | 31 |
radiant point | 31 |
solar disk | 31 |
two feet | 31 |
new england | 31 |
make one | 31 |
nearly feet | 31 |
meridian circle | 31 |
much farther | 31 |
telescopic stars | 31 |
professor ball | 31 |
south america | 31 |
living organism | 31 |
photographs taken | 31 |
earth may | 31 |
every revolution | 31 |
eastern horizon | 31 |
set aside | 31 |
new world | 31 |
two men | 31 |
base line | 31 |
shortly afterwards | 31 |
several hundred | 31 |
certain amount | 31 |
old age | 31 |
somewhat similar | 31 |
acid gas | 31 |
gold medal | 31 |
outer ring | 31 |
rudolphine tables | 31 |
natural philosophy | 31 |
harvard observatory | 31 |
professor barnard | 31 |
every case | 31 |
human intellect | 31 |
yet another | 30 |
later years | 30 |
apparent motions | 30 |
planet will | 30 |
must go | 30 |
great distances | 30 |
miles wide | 30 |
th magnitude | 30 |
favourable conditions | 30 |
careful examination | 30 |
another planet | 30 |
vegetable life | 30 |
extremely small | 30 |
young men | 30 |
orbit round | 30 |
numerical lunar | 30 |
meteoric shower | 30 |
one knows | 30 |
superior conjunction | 30 |
miles apart | 30 |
seventh magnitude | 30 |
present condition | 30 |
unknown planet | 30 |
thirty miles | 30 |
also called | 30 |
one million | 30 |
two observers | 30 |
considerable distance | 30 |
still remains | 30 |
whole heavens | 30 |
might almost | 30 |
aqueous vapors | 30 |
central position | 30 |
stars composing | 30 |
recent times | 30 |
given rise | 30 |
last two | 30 |
little planet | 30 |
mountain ranges | 30 |
du monde | 30 |
standard time | 30 |
many instances | 30 |
interplanetary space | 30 |
solid bodies | 30 |
one third | 30 |
past ages | 30 |
lunar atmosphere | 30 |
coma berenices | 29 |
dark side | 29 |
planet uranus | 29 |
closely associated | 29 |
seven degrees | 29 |
million times | 29 |
circular motion | 29 |
equal parts | 29 |
aurora borealis | 29 |
ever made | 29 |
eighteen years | 29 |
white spots | 29 |
heat produced | 29 |
simon newcomb | 29 |
aqueous vapour | 29 |
astronomical science | 29 |
new astronomy | 29 |
still farther | 29 |
cape observatory | 29 |
robert ball | 29 |
star alpha | 29 |
high tide | 29 |
observer will | 29 |
inverse square | 29 |
us consider | 29 |
may suppose | 29 |
southern cross | 29 |
glowing gas | 29 |
greenwich observations | 29 |
whole sky | 29 |
fainter stars | 29 |
three feet | 29 |
dark line | 29 |
lunar mountains | 29 |
two kinds | 29 |
planetary systems | 29 |
great men | 29 |
three bodies | 29 |
nineteen years | 29 |
new method | 29 |
great advantage | 29 |
upper end | 29 |
san domingo | 29 |
oceanus procellarum | 29 |
whole number | 29 |
night sky | 29 |
star near | 29 |
astronomical knowledge | 29 |
dense atmosphere | 29 |
internal heat | 29 |
reflected sunlight | 29 |
large portion | 29 |
white stars | 29 |
mean distances | 28 |
one will | 28 |
may exist | 28 |
transit room | 28 |
annual motion | 28 |
well worth | 28 |
two small | 28 |
ring system | 28 |
brilliant white | 28 |
solar activity | 28 |
just described | 28 |
doubtful whether | 28 |
will fall | 28 |
planetary nebula | 28 |
every twenty | 28 |
magellanic clouds | 28 |
generally believed | 28 |
yale college | 28 |
annual parallax | 28 |
nearly central | 28 |
smithsonian institution | 28 |
exceedingly small | 28 |
volcanic action | 28 |
seventy years | 28 |
lunar day | 28 |
professor newton | 28 |
given time | 28 |
even one | 28 |
material universe | 28 |
magnitudes four | 28 |
now generally | 28 |
much brighter | 28 |
eight miles | 28 |
close double | 28 |
george biddell | 28 |
new observatory | 28 |
sixteenth century | 28 |
many things | 28 |
great numbers | 28 |
wilson observatory | 28 |
southern horizon | 28 |
show us | 28 |
looks like | 28 |
far back | 28 |
percival lowell | 28 |
may still | 28 |
feet deep | 28 |
earth will | 28 |
outer slope | 28 |
nearest fixed | 28 |
many persons | 28 |
rapid rotation | 28 |
three bright | 28 |
glass will | 28 |
astronomical research | 28 |
empty space | 28 |
winter solstice | 28 |
astronomical discovery | 27 |
made known | 27 |
first point | 27 |
six inches | 27 |
told us | 27 |
long way | 27 |
henry draper | 27 |
solid crust | 27 |
next chapter | 27 |
will serve | 27 |
different points | 27 |
chapter xii | 27 |
might expect | 27 |
professor langley | 27 |
every reason | 27 |
modern astronomers | 27 |
round numbers | 27 |
past history | 27 |
american astronomer | 27 |
orbital revolution | 27 |
stars must | 27 |
twenty times | 27 |
october th | 27 |
may fairly | 27 |
great size | 27 |
diffused light | 27 |
forty miles | 27 |
chief stars | 27 |
much interest | 27 |
fifty thousand | 27 |
five feet | 27 |
may make | 27 |
sir james | 27 |
stars within | 27 |
carried round | 27 |
two million | 27 |
meteoric masses | 27 |
move round | 27 |
far enough | 27 |
single star | 27 |
southern fish | 27 |
hundred proofs | 27 |
polar diameter | 27 |
february th | 27 |
radiant heat | 27 |
turned toward | 27 |
one peak | 27 |
varies inversely | 27 |
quite possible | 27 |
chapter xi | 27 |
gamma draconis | 27 |
dry land | 27 |
large crater | 27 |
carried along | 27 |
many illustrations | 27 |
new ones | 27 |
north star | 27 |
might say | 27 |
upper part | 27 |
many thousand | 27 |
nebulous mass | 27 |
six weeks | 27 |
work done | 27 |
come back | 27 |
matter composing | 27 |
large ring | 27 |
fixed point | 27 |
powerful instruments | 27 |
light reflected | 27 |
almost impossible | 27 |
large extent | 27 |
one hour | 27 |
still remain | 27 |
retrograde motion | 26 |
thirty times | 26 |
count lewenhaupt | 26 |
telescopic objects | 26 |
true one | 26 |
rapid motion | 26 |
magnetic storms | 26 |
one body | 26 |
another star | 26 |
two principal | 26 |
big dipper | 26 |
solar rays | 26 |
general law | 26 |
special attention | 26 |
due north | 26 |
accurate observations | 26 |
last chapter | 26 |
low temperature | 26 |
say nothing | 26 |
will go | 26 |
brilliant star | 26 |
made many | 26 |
central hill | 26 |
two satellites | 26 |
now proceed | 26 |
terrestrial paradise | 26 |
come within | 26 |
certain distance | 26 |
many hundreds | 26 |
morning star | 26 |
also found | 26 |
first two | 26 |
hundred pounds | 26 |
may easily | 26 |
human knowledge | 26 |
two places | 26 |
turned round | 26 |
great accuracy | 26 |
one particular | 26 |
ring nebula | 26 |
mutual attractions | 26 |
us see | 26 |
make use | 26 |
nearest stars | 26 |
left hand | 26 |
every possible | 26 |
photograph taken | 26 |
individualized substance | 26 |
case may | 26 |
knew nothing | 26 |
small circle | 26 |
go round | 26 |
solid earth | 26 |
vast number | 26 |
scientific research | 26 |
far removed | 26 |
nearly every | 26 |
almost certain | 26 |
remarkable fact | 26 |
earth revolves | 26 |
without much | 26 |
superior planet | 26 |
due time | 26 |
hooker telescope | 26 |
otto struve | 26 |
mare nectaris | 26 |
favorable circumstances | 26 |
sun moves | 26 |
well defined | 26 |
will occur | 26 |
gaseous matter | 26 |
nearly parallel | 26 |
physical condition | 26 |
spectroscopic observations | 26 |
georgium sidus | 26 |
planets must | 26 |
might seem | 26 |
major planets | 26 |
one foot | 26 |
hollow centre | 26 |
two components | 25 |
solar rotation | 25 |
smaller one | 25 |
first attempt | 25 |
every time | 25 |
chemical constitution | 25 |
every particle | 25 |
though perhaps | 25 |
one inch | 25 |
mare humorum | 25 |
periodic comets | 25 |
even greater | 25 |
space occupied | 25 |
multiple star | 25 |
twenty feet | 25 |
meteoric bodies | 25 |
gave rise | 25 |
costa rica | 25 |
already remarked | 25 |
first satellite | 25 |
planets move | 25 |
large bright | 25 |
solar disc | 25 |
moon may | 25 |
first day | 25 |
outer space | 25 |
admiral smyth | 25 |
east longitude | 25 |
many people | 25 |
many hours | 25 |
red end | 25 |
among astronomers | 25 |
regular intervals | 25 |
angular diameter | 25 |
first law | 25 |
turned away | 25 |
us take | 25 |
much lower | 25 |
brought forward | 25 |
two classes | 25 |
violet rays | 25 |
bright line | 25 |
one focus | 25 |
glowing hydrogen | 25 |
much broken | 25 |
one else | 25 |
constantly increasing | 25 |
might easily | 25 |
early days | 25 |
inner half | 25 |
first thing | 25 |
widely different | 25 |
freezing point | 25 |
will ever | 25 |
popular astronomy | 25 |
bright central | 25 |
seems probable | 25 |
wide double | 25 |
observed facts | 25 |
planet mercury | 25 |
yet even | 25 |
considerable portion | 25 |
next morning | 25 |
little ring | 25 |
planet neptune | 25 |
great measure | 25 |
water vapor | 25 |
nearly four | 25 |
infinite number | 25 |
one night | 25 |
stony meteorites | 25 |
astronomical telescope | 25 |
following table | 25 |
three inches | 25 |
three different | 24 |
vs bm | 24 |
polar snows | 24 |
solar cluster | 24 |
close approach | 24 |
often called | 24 |
meteoric showers | 24 |
general rule | 24 |
northern heavens | 24 |
polar snow | 24 |
considerable number | 24 |
west longitude | 24 |
telescopic object | 24 |
true nature | 24 |
various kinds | 24 |
lunar eclipses | 24 |
larger star | 24 |
many respects | 24 |
galileo galilei | 24 |
never see | 24 |
important question | 24 |
intimately connected | 24 |
large masses | 24 |
central part | 24 |
chapter xiii | 24 |
nearly twenty | 24 |
snow caps | 24 |
great ring | 24 |
way across | 24 |
revolved around | 24 |
great amount | 24 |
physical science | 24 |
personal equation | 24 |
widely separated | 24 |
three million | 24 |
two inches | 24 |
farther away | 24 |
six minutes | 24 |
far apart | 24 |
powerful enough | 24 |
dark stars | 24 |
des sciences | 24 |
three minutes | 24 |
mean solar | 24 |
relative position | 24 |
various ways | 24 |
falling stars | 24 |
nearly twice | 24 |
little star | 24 |
celestial vault | 24 |
twenty degrees | 24 |
late years | 24 |
must pass | 24 |
certain degree | 24 |
planets revolve | 24 |
southern pole | 24 |
among us | 24 |
different colors | 24 |
comet appeared | 24 |
different portions | 24 |
earth might | 24 |
inch achromatic | 24 |
may even | 24 |
new planets | 24 |
less brilliant | 24 |
brings us | 24 |
astronomical journal | 24 |
particular star | 24 |
second law | 24 |
intensely heated | 24 |
celestial object | 24 |
conspicuous object | 24 |
apparent magnitude | 24 |
exactly equal | 24 |
planets revolving | 24 |
still another | 24 |
george iii | 24 |
much higher | 24 |
commander sampson | 24 |
doubt whether | 24 |
sun rises | 24 |
smaller stars | 24 |
great length | 23 |
three weeks | 23 |
visible stars | 23 |
many different | 23 |
average density | 23 |
will move | 23 |
magnetic storm | 23 |
every second | 23 |
three seconds | 23 |
one evening | 23 |
astronomische nachrichten | 23 |
professor lowell | 23 |
years afterwards | 23 |
well acquainted | 23 |
violet end | 23 |
already known | 23 |
thousand millions | 23 |
concave mirror | 23 |
central parts | 23 |
brilliant stars | 23 |
will remain | 23 |
two sides | 23 |
special interest | 23 |
great problem | 23 |
still higher | 23 |
might possibly | 23 |
many months | 23 |
latter case | 23 |
thirty feet | 23 |
mean diameter | 23 |
ten minutes | 23 |
miles distant | 23 |
vastly greater | 23 |
binary system | 23 |
get rid | 23 |
chromatic aberration | 23 |
holy scriptures | 23 |
lunar tables | 23 |
southern heavens | 23 |
great red | 23 |
outer surface | 23 |
slightly different | 23 |
sixteen years | 23 |
excessive heat | 23 |
magnetic observations | 23 |
large comet | 23 |
extremely difficult | 23 |
general appearance | 23 |
recent observations | 23 |
lower part | 23 |
different periods | 23 |
smaller star | 23 |
fifteen degrees | 23 |
circular orbits | 23 |
another time | 23 |
common sense | 23 |
slow motion | 23 |
earth rotates | 23 |
apparent movement | 23 |
hundredth part | 23 |
electrical repulsion | 23 |
johns hopkins | 23 |
enormous distance | 23 |
first view | 23 |
within reach | 23 |
eighty degrees | 23 |
solar radiation | 23 |
surface must | 23 |
near approach | 23 |
pretty well | 23 |
great lick | 23 |
express train | 23 |
pure mathematics | 23 |
strong enough | 23 |
elapsed since | 23 |
annular eclipse | 23 |
relatively small | 23 |
moon revolves | 23 |
spectral type | 23 |
miss herschel | 23 |
spot period | 23 |
earliest times | 23 |
photographic plates | 23 |
solar constant | 22 |
light coming | 22 |
two equal | 22 |
radial velocities | 22 |
another great | 22 |
also known | 22 |
similar manner | 22 |
near together | 22 |
planets may | 22 |
less conspicuous | 22 |
gaseous envelope | 22 |
best advantage | 22 |
least three | 22 |
body revolving | 22 |
considerably less | 22 |
generally known | 22 |
distinctly visible | 22 |
eighteen miles | 22 |
toward us | 22 |
mare nubium | 22 |
exactly opposite | 22 |
moving towards | 22 |
piazzi smyth | 22 |
old friend | 22 |
larger one | 22 |
great man | 22 |
every way | 22 |
telescopic comet | 22 |
rising sun | 22 |
actual distance | 22 |
remained visible | 22 |
millionth part | 22 |
deep crater | 22 |
little way | 22 |
many ages | 22 |
fall towards | 22 |
greatly increased | 22 |
cosmic time | 22 |
ancient times | 22 |
will soon | 22 |
elliptic path | 22 |
soon became | 22 |
small telescopes | 22 |
inner ring | 22 |
miles broad | 22 |
every hour | 22 |
various forms | 22 |
star may | 22 |
hardly possible | 22 |
first suggested | 22 |
giordano bruno | 22 |
fifteenth century | 22 |
system must | 22 |
infernal regions | 22 |
far distant | 22 |
axial revolution | 22 |
one must | 22 |
observer may | 22 |
regular solids | 22 |
crape ring | 22 |
bright streaks | 22 |
must take | 22 |
four months | 22 |
black spot | 22 |
great care | 22 |
stellar systems | 22 |
equatorial diameter | 22 |
present form | 22 |
may become | 22 |
magnetic observatory | 22 |
quite certain | 22 |
one man | 22 |
first astronomer | 22 |
will perhaps | 22 |
first half | 22 |
carefully observed | 22 |
might find | 22 |
many places | 22 |
next return | 22 |
though still | 22 |
little dog | 22 |
seen without | 22 |
different positions | 22 |
become acquainted | 22 |
must look | 22 |
every month | 22 |
turn round | 22 |
plant life | 22 |
seven planets | 22 |
comets whose | 22 |
every kind | 21 |
metallic vapors | 21 |
conspicuous stars | 21 |
take part | 21 |
apparent distance | 21 |
radiant energy | 21 |
de vico | 21 |
vertical circle | 21 |
found among | 21 |
main body | 21 |
daily life | 21 |
first discovery | 21 |
red light | 21 |
four degrees | 21 |
th november | 21 |
five planets | 21 |
great difference | 21 |
starting point | 21 |
first made | 21 |
international conference | 21 |
see nothing | 21 |
great globe | 21 |
results obtained | 21 |
astronomical world | 21 |
solar equator | 21 |
north latitude | 21 |
stand still | 21 |
well observed | 21 |
well enough | 21 |
imaginary line | 21 |
must make | 21 |
proctor says | 21 |
different kind | 21 |
polar cap | 21 |
total phase | 21 |
must revolve | 21 |
direct observation | 21 |
whose name | 21 |
three degrees | 21 |
curiously enough | 21 |
practical astronomer | 21 |
greater velocity | 21 |
diurnal rotation | 21 |
just outside | 21 |
sea level | 21 |
general character | 21 |
bad weather | 21 |
quite recently | 21 |
low ridges | 21 |
spherical aberration | 21 |
years past | 21 |
must exist | 21 |
exact astronomy | 21 |
mean motion | 21 |
years previously | 21 |
surface features | 21 |
hunting dogs | 21 |
august meteors | 21 |
spherical form | 21 |
little attention | 21 |
know whether | 21 |
highly heated | 21 |
will prove | 21 |
great heat | 21 |
may look | 21 |
general reader | 21 |
earth round | 21 |
now call | 21 |
turns round | 21 |
might take | 21 |
lower end | 21 |
sun appears | 21 |
rapid changes | 21 |
much pleased | 21 |
least two | 21 |
every planet | 21 |
two hemispheres | 21 |
almanac office | 21 |
times farther | 21 |
living organisms | 21 |
vs sbm | 21 |
feet per | 21 |
small amount | 21 |
liquid matter | 21 |
optical power | 21 |
almost always | 21 |
telescopic observation | 21 |
kinetic theory | 21 |
several thousand | 21 |
now come | 21 |
one satellite | 21 |
mathematical astronomy | 21 |
already explained | 21 |
immediate neighborhood | 21 |
nebulous light | 21 |
twentieth century | 21 |
one quarter | 21 |
new edition | 21 |
spring tides | 21 |
directly towards | 21 |
must either | 21 |
made use | 21 |
large amount | 21 |
high magnifying | 21 |
half century | 21 |
earth moved | 21 |
setting sun | 21 |
telescope may | 21 |
little stars | 21 |
nearly miles | 21 |
lunar globe | 21 |
well established | 21 |
months later | 21 |
two smaller | 21 |
somewhat larger | 21 |
report states | 21 |
first lord | 21 |
determine whether | 21 |
almost certainly | 21 |
less bright | 21 |
equally well | 21 |
larger scale | 21 |
celestial spaces | 21 |
white star | 21 |
dudley observatory | 21 |
star gamma | 21 |
fifty feet | 21 |
drawings made | 21 |
circle around | 21 |
new theory | 21 |
mare tranquilitatis | 20 |
without form | 20 |
ages ago | 20 |
somewhat less | 20 |
whose components | 20 |
whole length | 20 |
two lenses | 20 |
first one | 20 |
solar prominences | 20 |
torrid zone | 20 |
interesting object | 20 |
real motion | 20 |
certain conditions | 20 |
small ones | 20 |
moon appears | 20 |
national academy | 20 |
sinus iridum | 20 |
many hundred | 20 |
four moons | 20 |
somewhat smaller | 20 |
revolved round | 20 |
sharply defined | 20 |
daily motion | 20 |
must depend | 20 |
annual revolution | 20 |
astronomers royal | 20 |
comparatively low | 20 |
perfect sphere | 20 |
four inches | 20 |
yet known | 20 |
british museum | 20 |
great star | 20 |
equal distances | 20 |
eminent astronomers | 20 |
first thought | 20 |
general laws | 20 |
turning round | 20 |
forty degrees | 20 |
inquire whether | 20 |
high sun | 20 |
white polar | 20 |
white house | 20 |
early times | 20 |
early evening | 20 |
nearly uniform | 20 |
spectroscope shows | 20 |
twenty thousand | 20 |
magnitude companion | 20 |
little later | 20 |
incandescent gas | 20 |
professor airy | 20 |
giant stars | 20 |
johnstone stoney | 20 |
ten seconds | 20 |
circular path | 20 |
now well | 20 |
little book | 20 |
things seen | 20 |
planets around | 20 |
may come | 20 |
earth turns | 20 |
well understood | 20 |
high water | 20 |
whole year | 20 |
like many | 20 |
monthly notices | 20 |
first comet | 20 |
living beings | 20 |
first observation | 20 |
stars seem | 20 |
smaller ring | 20 |
space beyond | 20 |
recent discoveries | 20 |
la place | 20 |
situated near | 20 |
american museum | 20 |
will gradually | 20 |
every step | 20 |
von zach | 20 |
life may | 20 |
telescope tube | 20 |
stones fell | 20 |
max wolf | 20 |
far advanced | 20 |
face towards | 20 |
one month | 20 |
central point | 20 |
bodies revolving | 20 |
chapter xv | 20 |
two degrees | 20 |
following extract | 20 |
comet may | 20 |
good many | 20 |
fine ring | 20 |
light streaks | 20 |
every two | 20 |
present purpose | 20 |
five million | 20 |
somewhat like | 20 |
early years | 20 |
already shown | 20 |
professor hale | 20 |
ancient nations | 20 |
printed papers | 20 |
full daylight | 20 |
thirty degrees | 20 |
largest telescopes | 20 |
curved line | 20 |
convex lens | 20 |
single stars | 20 |
neap tides | 20 |
two astronomers | 20 |
first great | 20 |
globular star | 20 |
constellation hercules | 20 |
various members | 20 |
volcanic eruptions | 20 |
sixteen feet | 20 |
certain number | 20 |
different directions | 20 |
will tell | 20 |
greatest brilliancy | 20 |
professor holden | 20 |
put forth | 20 |
may remark | 19 |
square root | 19 |
practical purposes | 19 |
two seconds | 19 |
may mention | 19 |
luminous vapor | 19 |
free hydrogen | 19 |
sidereal period | 19 |
inner surface | 19 |
electric current | 19 |
light will | 19 |
dark regions | 19 |
meteoric dust | 19 |
first class | 19 |
vacuum tube | 19 |
circular form | 19 |
octagon room | 19 |
half inches | 19 |
great value | 19 |
high powers | 19 |
time required | 19 |
great square | 19 |
fall back | 19 |
due east | 19 |
great mountain | 19 |
various directions | 19 |
eleventh magnitude | 19 |
well founded | 19 |
known fact | 19 |
star catalogue | 19 |
great velocity | 19 |
three centuries | 19 |
also made | 19 |
sidereal day | 19 |
half way | 19 |
will say | 19 |
edward everett | 19 |
nearly overhead | 19 |
first observed | 19 |
distant object | 19 |
makes one | 19 |
red rays | 19 |
prime vertical | 19 |
great height | 19 |
nine times | 19 |
pass away | 19 |
crab nebula | 19 |
two forces | 19 |
sir henry | 19 |
synodical period | 19 |
nearly thirty | 19 |
nova cygni | 19 |
long afterwards | 19 |
one step | 19 |
much correspondence | 19 |
observed phenomena | 19 |
spectroscopic binary | 19 |
mira ceti | 19 |
terrestrial gravity | 19 |
diurnal movement | 19 |
exact position | 19 |
whole extent | 19 |
years hence | 19 |
uniform motion | 19 |
near one | 19 |
third star | 19 |
now become | 19 |
eight inches | 19 |
hours minutes | 19 |
different degrees | 19 |
northern latitudes | 19 |
necessary consequence | 19 |
angular velocity | 19 |
dark interior | 19 |
accurately known | 19 |
harton colliery | 19 |
technical language | 19 |
september th | 19 |
directly overhead | 19 |
will recollect | 19 |
quite clear | 19 |
thousand million | 19 |
french academy | 19 |
star names | 19 |
matter may | 19 |
something else | 19 |
gives rise | 19 |
various stages | 19 |
arctic regions | 19 |
geological survey | 19 |
system may | 19 |
inch hooker | 19 |
iron ships | 19 |
entire heavens | 19 |
gaseous state | 19 |
ever saw | 19 |
iron meteorites | 19 |
six stars | 19 |
pacific ocean | 19 |
separate stars | 19 |
mont blanc | 19 |
easily understood | 19 |
per annum | 19 |
already made | 19 |
vassar college | 19 |
circular orbit | 19 |
lunar observations | 19 |
another class | 19 |
late mr | 19 |
arthur biddell | 19 |
sandford fleming | 19 |
strangely enough | 19 |
solid state | 19 |
new instrument | 19 |
highest point | 19 |
nearly six | 19 |
whole subject | 19 |
main features | 19 |
steady atmosphere | 19 |
one mile | 19 |
author says | 19 |
next step | 19 |
american association | 19 |
comparative sizes | 19 |
vice versa | 19 |
often seen | 19 |
exact time | 19 |
shall presently | 19 |
apparent path | 19 |
eruptive prominences | 19 |
many ways | 19 |
sidereal sphere | 19 |
professor smyth | 19 |
two ways | 19 |
lunar disc | 19 |
mountain ring | 19 |
among others | 19 |
refracting telescopes | 19 |
heavy bodies | 19 |
giant planet | 19 |
part ii | 19 |
far larger | 19 |
moon around | 19 |
may serve | 19 |
thirteen years | 18 |
fifty minutes | 18 |
considerably greater | 18 |
circle described | 18 |
generally speaking | 18 |
seven thousand | 18 |
ball says | 18 |
never saw | 18 |
degrees north | 18 |
stars move | 18 |
surface temperature | 18 |
present knowledge | 18 |
carefully studied | 18 |
professor hall | 18 |
look back | 18 |
second time | 18 |
precisely similar | 18 |
small bright | 18 |
mountain mass | 18 |
every minute | 18 |
almost say | 18 |
moon system | 18 |
path around | 18 |
might suppose | 18 |
entire surface | 18 |
will readily | 18 |
inner planets | 18 |
previous chapter | 18 |
former case | 18 |
parallactic ellipse | 18 |
short periods | 18 |
ten feet | 18 |
large planets | 18 |
creative power | 18 |
light takes | 18 |
vast distance | 18 |
conic sections | 18 |
among many | 18 |
roughly speaking | 18 |
small central | 18 |
ever lived | 18 |
horizontal line | 18 |
one twenty | 18 |
cometary orbits | 18 |
british astronomical | 18 |
great attention | 18 |
electrical currents | 18 |
telescope shows | 18 |
known laws | 18 |
another form | 18 |
drawn towards | 18 |
different bodies | 18 |
must suppose | 18 |
general idea | 18 |
many observers | 18 |
satisfactory explanation | 18 |
old times | 18 |
new jersey | 18 |
inch aperture | 18 |
lunar acceleration | 18 |
south africa | 18 |
carries us | 18 |
perhaps one | 18 |
one whose | 18 |
present work | 18 |
solid particles | 18 |
star must | 18 |
faint light | 18 |
italian astronomer | 18 |
spectroscopic method | 18 |
living matter | 18 |
surface will | 18 |
atlantic ocean | 18 |
ruiz del | 18 |
solar observatory | 18 |
inner one | 18 |
first case | 18 |
soon afterwards | 18 |
star beta | 18 |
general level | 18 |
various distances | 18 |
found convenient | 18 |
nine hours | 18 |
every thirty | 18 |
different ways | 18 |
just visible | 18 |
optical illusion | 18 |
stellar evolution | 18 |
within one | 18 |
two separate | 18 |
chemical composition | 18 |
great law | 18 |
rare occasions | 18 |
must know | 18 |
eastern limb | 18 |
especially interesting | 18 |
general surface | 18 |
summer months | 18 |
generally supposed | 18 |
highest mountains | 18 |
cubic foot | 18 |
hopkins university | 18 |
moves around | 18 |
two comets | 18 |
moving round | 18 |
little craters | 18 |
outer half | 18 |
total mass | 18 |
even among | 18 |
must come | 18 |
earliest ages | 18 |
moves round | 18 |
times larger | 18 |
apparent change | 18 |
however much | 18 |
actual measurement | 18 |
narrow limits | 18 |
universal law | 18 |
report brit | 18 |
point overhead | 18 |
globular cluster | 18 |
two successive | 18 |
teaches us | 18 |
constellation lyra | 18 |
faintest stars | 18 |
opposite points | 18 |
considerable size | 18 |
horizontal parallax | 18 |
apparent place | 18 |
theoretical astronomy | 18 |
unstable equilibrium | 18 |
every variety | 18 |
resolution offered | 18 |
first noticed | 18 |
will begin | 18 |
goes round | 18 |
differential equations | 18 |
much work | 18 |
like one | 18 |
see page | 18 |
terrestrial life | 18 |
every new | 18 |
late dr | 18 |
del arbol | 18 |
just one | 18 |
elliptic orbits | 18 |
moon passes | 18 |
became known | 18 |
whose orbit | 18 |
early life | 18 |
singular fact | 18 |
primum mobile | 18 |
tons per | 18 |
bright spot | 18 |
true system | 18 |
de struve | 18 |
human nature | 18 |
nine hundred | 18 |
just beyond | 18 |
little bodies | 18 |
accurately determined | 18 |
instrumental means | 18 |
called seas | 18 |
central condensation | 18 |
ten degrees | 18 |
maria mitchell | 18 |
great rapidity | 17 |
easily see | 17 |
northern part | 17 |
extreme tenuity | 17 |
general form | 17 |
celestial photography | 17 |
feet thick | 17 |
observer must | 17 |
motion will | 17 |
table ii | 17 |
elliptical orbit | 17 |
going round | 17 |
among men | 17 |
flat ring | 17 |
became visible | 17 |
hard work | 17 |
third edition | 17 |
different rates | 17 |
different seasons | 17 |
outer planet | 17 |
holds good | 17 |
mars will | 17 |
one kind | 17 |
may expect | 17 |
may yet | 17 |
may regard | 17 |
natural science | 17 |
apparent displacement | 17 |
much shorter | 17 |
became evident | 17 |
newtonian law | 17 |
degrees apart | 17 |
sufficient accuracy | 17 |
already pointed | 17 |
never heard | 17 |
known facts | 17 |
dark room | 17 |
small planet | 17 |
might make | 17 |
comet must | 17 |
greatest interest | 17 |
differential calculus | 17 |
nearly five | 17 |
diametrically opposite | 17 |
senior wrangler | 17 |
directed toward | 17 |
disturbing influence | 17 |
great pleasure | 17 |
come together | 17 |
obedient servant | 17 |
unassisted eye | 17 |
still larger | 17 |
reflective power | 17 |
chief star | 17 |
eastern side | 17 |
travel round | 17 |
magnetic disturbances | 17 |
south poles | 17 |
biddell airy | 17 |
hundred stars | 17 |
may note | 17 |
crescent moon | 17 |
carried away | 17 |
james south | 17 |
near us | 17 |
every body | 17 |
place within | 17 |
one among | 17 |
pole will | 17 |
minute craters | 17 |
large meteor | 17 |
lost sight | 17 |
david brewster | 17 |
laden atmosphere | 17 |
large planet | 17 |
twelve miles | 17 |
greater portion | 17 |
polar distance | 17 |
infinite variety | 17 |
looked like | 17 |
comparatively short | 17 |
enormous mass | 17 |
immense distance | 17 |
beautiful object | 17 |
enormous size | 17 |
whole time | 17 |
harvard university | 17 |
remarkable manner | 17 |
human beings | 17 |
directly opposite | 17 |
one hemisphere | 17 |
small angle | 17 |
strongly marked | 17 |
single exception | 17 |
life exists | 17 |
solar phenomena | 17 |
new discoveries | 17 |
seventy miles | 17 |
form one | 17 |
lady huggins | 17 |
equatorial belt | 17 |
luminous bodies | 17 |
large irregular | 17 |
observation made | 17 |
electric currents | 17 |
low density | 17 |
gave us | 17 |
better known | 17 |
moon moves | 17 |
miles thick | 17 |
lady herschel | 17 |
will seem | 17 |
common zero | 17 |
upper regions | 17 |
second edition | 17 |
small mirror | 17 |
whole series | 17 |
perihelion distance | 17 |
simple one | 17 |
almost infinite | 17 |
solar translation | 17 |
last half | 17 |
way round | 17 |
time will | 17 |
nineteen miles | 17 |
solar temperature | 17 |
one minute | 17 |
ordinary telescopes | 17 |
actual size | 17 |
difficult problem | 17 |
scientific investigation | 17 |
just south | 17 |
astronomical tables | 17 |
harvard annals | 17 |
shall take | 17 |
great weight | 17 |
moral law | 17 |
informs us | 17 |
distinct vision | 17 |
new era | 17 |
may arise | 17 |
left us | 17 |
certain point | 17 |
discovery made | 17 |
whose distance | 17 |
less time | 17 |
higher powers | 17 |
solar constitution | 17 |
solar motion | 17 |
circling round | 17 |
circle will | 17 |
favorable conditions | 17 |
favourable circumstances | 17 |
several stars | 17 |
terrestrial volcanoes | 17 |
actual observation | 17 |
seems likely | 17 |
may occur | 17 |
must admit | 17 |
times brighter | 17 |
crowded together | 17 |
seasonal changes | 17 |
greater degree | 17 |
comet will | 17 |
last years | 17 |
first appearance | 17 |
greatest number | 17 |
absolutely necessary | 17 |
great oceans | 17 |
must first | 17 |
may consider | 17 |
great masses | 17 |
meteoritic hypothesis | 17 |
early history | 17 |
computing room | 17 |
diurnal circle | 17 |
interior surface | 17 |
accurate knowledge | 17 |
emperor rudolph | 17 |
various places | 17 |
solar day | 17 |
seems almost | 17 |
ancient astronomers | 17 |
triple star | 17 |
extremely minute | 17 |
smaller bodies | 17 |
charles ii | 17 |
vast numbers | 17 |
true theory | 17 |
mountain arm | 17 |
easily found | 17 |
future time | 17 |
every astronomer | 16 |
mean longitude | 16 |
distant suns | 16 |
direction towards | 16 |
apparent time | 16 |
will doubtless | 16 |
initial point | 16 |
stars scattered | 16 |
assure us | 16 |
many observations | 16 |
called attention | 16 |
approaching us | 16 |
cambridge philosophical | 16 |
considerable time | 16 |
force acting | 16 |
give way | 16 |
bound together | 16 |
us first | 16 |
thirty thousand | 16 |
planet may | 16 |
either case | 16 |
new one | 16 |
magnetic force | 16 |
minute particles | 16 |
bright rays | 16 |
eight hours | 16 |
true position | 16 |
et de | 16 |
one period | 16 |
little group | 16 |
great force | 16 |
mutual relations | 16 |
must follow | 16 |
first instance | 16 |
actually seen | 16 |
metallic lines | 16 |
high light | 16 |
travels round | 16 |
whole visible | 16 |
common motion | 16 |
eight feet | 16 |
will suffice | 16 |
years earlier | 16 |
nine miles | 16 |
geological time | 16 |
purely scientific | 16 |
surrounding space | 16 |
original position | 16 |
let fall | 16 |
now called | 16 |
point near | 16 |
little beyond | 16 |
still smaller | 16 |
meteoric astronomy | 16 |
various sizes | 16 |
first glance | 16 |
south latitude | 16 |
vast amount | 16 |
chapter xiv | 16 |
general public | 16 |
north side | 16 |
early age | 16 |
plumian professor | 16 |
ordinary star | 16 |
take care | 16 |
time occupied | 16 |
urban viii | 16 |
great advance | 16 |
tobias mayer | 16 |
may ask | 16 |
telescopic observations | 16 |
known planets | 16 |
present volume | 16 |
january th | 16 |
several miles | 16 |
looking back | 16 |
distance equal | 16 |
greenwich meridian | 16 |
shooting star | 16 |
post office | 16 |
first saw | 16 |
totally eclipsed | 16 |
century later | 16 |
first letter | 16 |
interesting fact | 16 |
general way | 16 |
every respect | 16 |
mere point | 16 |
last three | 16 |
many small | 16 |
planetary perturbation | 16 |
metric system | 16 |
fifty million | 16 |
time taken | 16 |
tidal wave | 16 |
vast distances | 16 |
inner satellite | 16 |
distant planet | 16 |
teach us | 16 |
twelve days | 16 |
contained within | 16 |
two poles | 16 |
present rate | 16 |
professor schumacher | 16 |
without doubt | 16 |
stars like | 16 |
shall now | 16 |
often happens | 16 |
nebulous stars | 16 |
bodies may | 16 |
winged horse | 16 |
vast mass | 16 |
light travels | 16 |
density must | 16 |
vacant space | 16 |
somewhat greater | 16 |
near keswick | 16 |
little farther | 16 |
makes us | 16 |
good work | 16 |
le monnier | 16 |
alpha herculis | 16 |
average number | 16 |
two cases | 16 |
general principles | 16 |
another point | 16 |
must needs | 16 |
natural phenomena | 16 |
five seconds | 16 |
gaseous condition | 16 |
called canals | 16 |
many days | 16 |
much trouble | 16 |
three quarters | 16 |
several parts | 16 |
level surface | 16 |
first part | 16 |
inhabited worlds | 16 |
plainly visible | 16 |
continually changing | 16 |
tidal action | 16 |
due course | 16 |
little distance | 16 |
celestial globe | 16 |
long exposure | 16 |
remarkable feature | 16 |
binary star | 16 |
terraced walls | 16 |
move around | 16 |
attenuated vapors | 16 |
large body | 16 |
two weeks | 16 |
star marked | 16 |
black spots | 16 |
former times | 16 |
subsequent years | 16 |
outer regions | 16 |