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Life is unlikely to survive on exoplanets that orbit cooling stars such as white dwarfs, a new study suggests. These stars' shifting habitable zones — the range of distances where liquid water, and perhaps life as we know it, could exist — would make it difficult for any life-forms to stick around for the long haul, researchers said.
"These planets, if we find them today in a current habitable zone, previously had to have gone through a phase which sterilized them forever," study lead author Rory Barnes, of the University of Washington, said in a statement.. .... VIDEO
Image credit: David A. Aguilar (CfA)
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