The most massive chunk of Mars ever found on Earth could sell for up to US$4 million in a Sotheby's auction later this month.

Despite being known as the Red Planet, Mars shows off its swirling yellows, oranges and browns in a new satellite photo from ...

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

Researchers are developing bioplastic bubbles from algae that could grow, repair, and protect habitats on Mars without ...

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

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

It's possible that Mars' moons were originally asteroids that were captured by the planet's gravitational pull. There's also ...

A rare meteorite that traveled 36 million miles on its journey to Earth could become the most expensive space rock ever sold ...

The thick, mineral-rich layers of clay found on Mars suggest that the Red Planet harbored potentially life-hosting ...

A lab experiment that simulated Mars conditions showed that green algae can grow in plastic containers made from the same ...

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above some clouds before dawn. It’s twice as tall as Earth’s largest volcano ...

If you looked at the churning clouds near Jupiter’s pole, they appear like ocean currents on Earth — as if you’re looking at ...