New evidence of ancient rivers suggests Mars may have been a "blue planet," thanks to an ocean spanning its entire northern ...

A new study has examined how future human missions to Mars could access one of the planet's most vital resources—water. The ...

Mars, long admired for its rusty hue and alien deserts, may play a far greater role in shaping life on Earth than once ...

Three billion years ago, you could have stood on Mars and watched a river spill into a sea. That picture is still speculative ...

New simulations show red planet affects Milankovitch cycles that shape how solar energy is distributed on Earth over millions ...

Helicopters on Mars may sound like something from a science fiction novel — or perhaps just a typical "Doctor Who" episode. But actually, they're not fully confined to the world of sci-fi; after all, ...

Mars has captivated scientists and the public alike for centuries. One of the biggest reasons is the planet’s reddish hue, earning the fourth rock from the sun one of its most popular nicknames — the ...

Mars today is a frozen, dusty desert. But if you look deep inside Valles Marineris, the largest canyon system on Mars and in ...

Previous research on deep-sea sediments had suggested that Mars might influence Earth's climate, but the magnitude of this ...

Visit Mars as it might have looked billions of years ago. Not frozen and dry, but wet, warm, and alive with flowing water. Across vast highlands near the Martian equator, deep river-like valleys snake ...

Time moves differently on Mars — not in the Tibetan philosophy sense of the word, but in a measurable, physics-will-ruin-your-mission kind of way that's giving NASA engineers a real headache. As the ...

Researchers discovered Mars subtly affects Earth’s orbit and axial tilt. These small changes help trigger ice ages and ...