Is all of our universe… lit? Can you be hurtling through space and accidentally fly head first into a planet because oops you didn’t have your headlights on?
In: Physics
No. There are large voids between galaxies of nothingness for hundreds of thousands of light years. There is also void space within galaxies.
I believe the term is “Orphan planets”; planets not attached to a star and just hurtle through space like a supermassive asteroid.
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