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news-009010		Astronomer Bennett’s team discovers new class of planets | News | Notre Dame News | University of Notre Dame			.html	text/html	937	33	55	Astronomers are also able to detect planets orbiting stars if the light from the background star is warped by both the planet and its host star. Bennett explains the likely origin of these isolated planets: “Our results suggest that planetary systems often become unstable, with planets being kicked out from their places of birth by close encounters with other planets.	cache/news-009010.html	txt/news-009010.txt