The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, colder neighbor.

Perseverance just landed on Mars, where it will search for signs of life. But space's cool factor doesn't begin or end there!

Mars glows red from rusty iron oxide covering its surface. In this article, find out why is Mars called the Red Planet, its war god namesake, five key facts, and what makes our neighbor so fascinating ...

The snapshots detail features and topography in the Red Planet's Acheron Fossae region. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The ...