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.
What do you wish you’d learned in school? On this episode, Neil deGrasse Tyson and comic co-host Chuck Nice go back to school to answer questions about simulation theory, time dilation, white holes, the sound of space, and more!
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Photo Credit: NASA/ESA and The Hubble Heritage Team (STScI), Public domain, via Wikimedia Commons
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