Photos and videos of astronauts on the ISS show them floating around, but saying there's zero gravity isn't fully accurate.

An experiment involving artificial organs is just one way researchers are trying to capitalize on the weird ways low-gravity environments affect the human body. There's a good reason why astronauts ...

Scientists on the ISS are studying how condensation works in space to improve cooling systems for electronics on Earth and in ...

NASA shows how space takes a toll on men and women differently. — -- With an upcoming mission to Mars, NASA is studying the ways that living in space affects both men and women. In a study ...

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Mars is a cold, dry, desert-like planet. But billions of years ago, scientific evidence suggests that it had a thick ...