Cosmic Queries – Back to School Edition
StarTalk Radio
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Are There Also Vagabond Planets?
We think some planets when they're trying to form in their star system get ejected. And then they wander through space basically homeless. Many planets have interior heat like we do, so if you have a source of heat you might be able to still sustain life even though you're not near any stars at all. So as far as we know, yes there are there could be very many as well.
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