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Humans could have come from Mars, scientists have said. A study by Johns Hopkins University has found that alien microbes could travel between planets on asteroids, meaning humans could be descended ...

A huge solar storm struck Mars in 2024, supercharging its upper atmosphere and briefly disrupting spacecraft orbiting the Red Planet.

Mars is a cold, dry, desert-like planet. But billions of years ago, scientific evidence suggests that it had a thick atmosphere, which kept it warm enough to support flowing water on its surface. So, ...

Learn how bacteria survived a simulated asteroid impact and could travel between planets on asteroid debris.