Why is Mars barren and uninhabitable, while life has always thrived here on our relatively similar planet Earth?

China is positioning itself to take the lead in one of the most coveted goals in planetary science—returning samples from ...

NASA’s Curiosity rover took a photo of the night sky and managed to spot both Earth and Venus. Curiosity is aging, but it’s still going strong and continues to make new discoveries on Mars.

New research shows how Mars may have undone its own habitability, while Earth stayed stable enough to support life.

The Perseverance rover finds a mysterious black rock on Mars, “Skull Hill,” which intrigues scientists because of its possible origin.

One of the great unsolved problems in modern planetary science is written on the surface of Mars. Mars has canyons that were ...

China’s Tianwen-3 Mars sample return mission could bring Red Planet rocks back to Earth as early as 2031—years ahead of competing U.S.-European efforts ...

Scientists had hypothesized before the rover arrived that the peculiar ridges formed with the last trickles of water in the ...