NASA Rover Finds Active, Ancient Organic Chemistry on Mars

NASA's Mars Curiosity rover has measured a tenfold spike in methane, an organic chemical, in the…

NASA’s MAVEN Mission Identifies Links in Chain Leading to Atmospheric Loss

The observations from the Mars-orbiting mission reveal a new process by which the solar wind can…

MESSENGER Data Suggest Recurring Meteor Shower on Mercury

Mercury appears to get hit by a periodic meteor shower, possibly associated with a comet that…

Mars Spacecraft Reveal Comet Flyby Effects on Martian Atmosphere

Two NASA and one European spacecraft that obtained the first up-close observations of a comet flyby…

NASA to Discuss Science Findings of Oct. 19 Comet Flyby of Mars

NASA will host a media teleconference at noon EST on Friday, Nov. 7, to provide initial…

NASA Holds Teleconference on Intriguing Rocket Experiment Results

NASA will host a news teleconference at 2 p.m. EST Thursday, Nov. 6, to announce discoveries…

Close Encounters: Comet Siding Spring Seen Next to Mars

This composite NASA Hubble Space Telescope Image captures the positions of comet Siding Spring and Mars…

NASA-led Study Sees Titan Glowing at Dusk and Dawn

New maps of Saturn’s moon Titan reveal large patches of trace gases shining brightly just off…

NASA’s Hubble Telescope Finds Potential Kuiper Belt Targets for New Horizons Pluto Mission

Peering out to the dim, outer reaches of our solar system, NASA’s Hubble Space Telescope has…

NASA Mission Provides Its First Look at Martian Upper Atmosphere

NASA's Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft has provided scientists their first look at a…