Mars changed from a blue world with water to a red desert because its atmosphere escaped into space over billions of years.

Mars has shone red in the night sky for as long as humans have gazed up at the cosmos, fascinating people from the ancient Romans to the present day. "The fundamental question of why Mars is red has ...

A former chief historian of NASA reflects on the history and future of Mars exploration Roger D. Launius The original 'Face on Mars' image taken by NASA's Viking 1 orbiter that resembled a human face ...

For a number of decades now, astronomers have wondered about water on Mars. Thanks to ESA’s Mars Express, much of the speculation has been replaced with facts. Launched on 2 June 2003, Mars Express ...

Exotically pitted “Swiss-cheese” terrain made of carbon dioxide (dry ice) overlies the topmost layer of water ice in Mars’ South Polar Massive Carbon Dioxide Ice Deposit. Image is about 1 kilometer ...

Camille Flammarion's work imagined what might exist beyond Earth in the universe. Three Lions/Hulton Archive via Getty Images Living in today’s age of ambitious robotic exploration of Mars, with an ...

Mars may have hosted life billions of years ago, a possibility that has long intrigued scientists. Now, new evidence suggests the planet was habitable for even longer than previously thought, due to ...

"Even the largest floods we modeled couldn't reach far enough to explain all the rootless cones we see." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

I wonder how people at NASA feel about being at the mercy of Elon Musk. Are they nostalgic about the good old days when Hitler’s rocket engineers helped them put Neil Armstrong on the moon? Being used ...

It’s hard to form rocks like these without a lot of water,” said Dr. Briony Horgan, a planetary scientist and member of ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Meteorites that strike Earth don’t always come from the deepest ...