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 ...

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

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.

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

A meteorite that is the largest known piece of Mars on Earth is expected to fetch up to $4 million when it goes up for ...

Arsia Mons, which dwarfs Earth's tallest volcanoes, and its two neighboring volcanoes are often surrounded by water ice clouds, especially in the early morning. The image released Friday marks the ...

For years, scientists have puzzled over why Earth and Mars are missing certain key elements. Now, a fresh study suggests ...

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 ...