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

Today, the planet Mars presents itself as a cold, arid desert, but its soil retains the imprint of a far more welcoming past. Meandering valleys and water-altered minerals attest to a period when ...

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 ...

Astronauts train to scale a Mars volcano at an analogue site in France. Lava tubes that crisscross the Martian surface might provide sanctuaries for the first human explorers on the Red Planet. (Photo ...

The search for life on Mars dates back about five decades, and a Sept. 10 announcement marks perhaps the most dramatic advancement yet. The news: NASA's Perseverance rover had found potential signs of ...

Mars didn’t always look like the barren world we see today. Over billions of years, the Sun’s solar wind stripped away much of its atmosphere, helping transform it from a warmer, wetter planet into a ...