Mars used to have a warmer and wetter climate, which changed after billions of years because the Sun's solar wind removed ...

Ever since humans gazed at the night sky, we’ve been drawn to that tiny reddish dot hovering above. Mars has captivated our imagination for generations, sparking countless questions about whether we ...

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 ...

President Donald Trump and Elon Musk, the world's richest man, want to make living on Mars a reality. Musk has said that his company, SpaceX, can get humans to Mars as early as 2029. Meanwhile, NASA ...

When Philip K. Dick imagined artificial beings in his book "Do Androids Dream of Electric Sheep," the question was whether machines could think and feel like humans. Today, NASA is posing a related, ...