Alexei Leonov was the first person to leave the relative safety of his spacecraft and experience the silence of space.
There used to be nine planets. Now there are eight, or maybe there are nine after all. Whichever you prefer, here is a list of them in the order they appear in the solar system.
Reference Article: Facts about the four fundamental forces that describe every interaction in nature.
Find out what's up in your night sky during October 2019 and how to see it in this Space.com stargazing guide.
If you could journey through the cosmos' most monstrous objects, what tales — if any — would you be able to tell?
Scott Kelly clocked 340 consecutive days in space and 520 days in space total during his career as a NASA astronaut.
Elon Musk is an entrepreneur best known in space circles for launching SpaceX, the first private company to ship cargo to the International Space Station.
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