Mars is smaller than Earth. It has a diameter of roughly 4,222 miles (6,794 km) — about half Earth's diameter, according to the European Space Agency (ESA). The Red Planet is rocky, much like Earth.

Lake Salda, in southwestern Turkey, bears a close resemblance to Mars' Jezero crater, which is currently being sampled by ...

Researchers exposed two lichen species to Mars-like atmospheric conditions for five hours—and one performed impressively.

In the long term, these efforts could extend to the entire planet in an effort to make Mars "Earth-like." This process is known as "terraforming," and many proposals have been made over the past ...

They look like a dish of ... to anything on Earth. NASA's new images were found by Perseverance along the rim of the Jezero Crater, a 28-mile-wide region on Mars that may have once been flooded ...

Mars wasn’t always a desolate, dusty world. Scientists think that, at some point in the red planet’s history, it was temperate much like Earth is today. But around three or four billion years ...

Despite strict sterilization protocols, Earth’s bacteria might be hitching a ride on spacecraft, potentially contaminating the Red Planet. Could microbes from Earth survive on Mars? And if so ...

A British-built Mars rover stuck on Earth since the start of the war in Ukraine may soon be on its way after the UK Space Agency agreed to pay for its ride down to the Red Planet.

Yes, the spots look a lot like those produced by microbes on Earth. But the spots might ... in Perseverance’s belly, awaiting a ride off Mars for precisely that purpose. Regardless of how ...