So a question for you guys who know more about space than me.
Obviously the majority of space is empty space (not counting what we don't know about dark energy and matter and anything else that exists in 'empty' space). Both within galaxies, but even moreso outside of galaxies. And obviously stars exist within galaxies.
But, even if it's extremely rare, could a star conceivably be knocked out of a galaxy's gravity well and exist outside a galaxy, like a comet or other things? And if so, do we know of any such examples?
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