They're not actual spiders, of course, but rather strange geological features.

The natural history-themed sale on Wednesday features a 54-pound hunk of Mars estimated at $2 million to $4 million.

Mars has long been a symbol of humanity’s curiosity and ambition. Once the backdrop for science fiction tales, it’s now the focus of real-world plans for exploration, colonization, and survival. But ...

Two meteorites found in the Sahara in 2023 might be from Mercury, a study suggests, but doubts remain due to how little is known about the planet closest to the sun.

This Mars rock is up for auction at Sotheby's in New York City this week, which is why it's currently on display in the Upper ...

Without enough liquid water on the surface, a planet's atmosphere can become choked with carbon dioxide, raising temperatures ...

Mariner 4, built by JPL in Pasadena, took the images on July 14, 1965. One of the mission's leaders reflects on decades of ...

Compare Mars and Earth in size, atmosphere, gravity, and potential for life. Discover their differences and shared traits. Explore the mysteries of the Red Planet!

NASA’s Perseverance Mars rover has collected its first sample of rock for return to Earth, part of its mission to finally reveal whether the red planet ever hosted life.

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