My question to everyone out there is whether you think space travel is necessary for humankind. Or should we first discovery all of earths mysteries or not go anywhere and just stick to earth keeping to ourselves?
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Are you stupid? The earth isn't going to be perfect forever. Many things could turn this place upside down; asteroids, climate change, solar flares, nearby supernovas, our sun dying out. We need to find new worlds to populate if nothing else simply for the sake of survival.