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Did you know there are billions and billions of stars in the universe? They're grouped together as galaxies, including our very own spiral-shaped Milky Way galaxy And did you know …
Did you know that the first American astronaut who went to space didn't have a bathroom, so he had to pee in his spacesuit? We've come a long way since then, including inventing …
Did you know that astronauts train for spacewalks by going underwater in their spacesuits? Or what about that engineers have programmed robots to explore space on their own? …