Earth has rarely looked as remarkable as it does in this stunning shot (above) captured by NASA astronaut Don Pettit from the International Space Station (ISS).

A 54-pound (25-kilogram) rock. Estimated auction price: $2 million to $4 million. Why so expensive? It’s the largest piece of ...

This Martian meteorite is the largest piece of Mars we have ever found by a long shot,” said Cassandra Hatton, vice chairman ...

Mars is easiest to see when it’s closest to Earth, which happens about every two years. This event is called “opposition.” In ...

A new map shows hidden Martian rivers stretching thousands of miles, offering fresh evidence of a warm, wet ancient Mars.

New discoveries by NASA's Curiosity Mars rover may not only explain why the Red Planet is a dry, lifeless desert, but that it ...

In a dramatic new discovery, scientists have identified over 15,000 kilometers of ancient riverbeds on Mars, revealing that ...

Looks like Mars might have had more water than anyone previously imagined.

Embark on a breathtaking journey to Mars in stunning 4K, captured by NASA’s legendary rovers: Spirit, Opportunity, Curiosity, and Perseverance. This video brings you face-to-face with the Martian ...

The aerospace giant says it can revive Mars Sample Return with a leaner, lower-cost approach drawing on proven designs.

The spacecraft now almost tips upside down relative to Mars to give its radar the best view. The Mars Reconnaissance Orbiter ...