New Study Helps Answer Mystery of What Happened to Mars' Early Atmosphere

Mars used to have a thicker atmosphere and water on its surface, but what happened to that atmosphere has been a mystery. New research may finally help answer that question. Image Credit: M. Kornmesser/ESO

The question of how Mars changed from a once wet world to the much colder and drier one we see […]

Impact Glass Discovered on Mars: How It Might Help In Search for Evidence of Past Life

Image from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) instrument on the Mars Reconnaissance Orbiter, showing deposits of impact glass (green) in Alga Crater. Image Credit: NASA/JPL-Caltech/JHUAPL/Univ. of Arizona

For the first time, impact glass has been detected on the surface of Mars; the discovery not only provides new information about the formation […]

NASA Gears Up Science Fleet for Once-In-A-Lifetime Flyby of Oort Cloud Comet With Mars

Comet Siding Spring (C/2013 A1) hurtling towards encounter at Mars on Oct. 19, 2014 in this artist’s concept. Credit: NASA See cool encounter animation below

One week from today, NASA’s Red Planet armada is primed and ready with front row seats for the once-in-a-lifetime opportunity to study an Oort cloud comet, as it makes […]

‘Mr. O’ Finds Evidence for Ancient Underground Water on Mars

Artist’s concept of the Mars Reconnaissance Orbiter (MRO) in orbit around the Red Planet. Its objectives are twofold: “Reconnaissance” of current and future landing sites and “Exploration” of Mars, in search of a warmer, wetter, and perhaps life-sustaining past. Image Credit: NASA/Jet Propulsion Laboratory

Much of the talk of Mars these days centers on […]