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We’re expected to collide with Andromeda in about 5 billion years. Meanwhile, the sun is expected to brighten enough in 1 billion years to evaporate the oceans. We’re gonna need to find another planet if we want to make it to Andromeda.
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Clearly he doesn't know what happens when you try to switch flights on a whim. >

Planets are actually planets going really fast through space, nice try though >

They are probably something an advanced race would utilize for long space travel. Being able to continue your species while traveling to the next place. Maybe we're just old space humans that are trying to get closer to Andromeda (I know how ridiculous I'm sounding, I just let my brain go sometimes)