Scientists turn back time to track methane emissions on Mars

NASA's Curiosity rover landed on Mars in August 2012, and its investigations revealed that Mars was once a potentially habitable planet. One of Curiosity's most exciting observations has been periodic, unusually high abundances ...

The mission of a lifetime: a drone on Titan in 2034 (Update)

Elizabeth Turtle was overjoyed when, on June 26, she received a call from NASA: her project to send a drone quadcopter to Titan, Saturn's largest moon, was given the green light, which came with a budget of nearly a billion ...

Cassini's final view of Titan's northern lakes and seas

During NASA's Cassini mission's final distant encounter with Saturn's giant moon Titan, the spacecraft captured the enigmatic moon's north polar landscape of lakes and seas, which are filled with liquid methane and ethane.

Bursts of methane may have warmed early Mars

The presence of water on ancient Mars is a paradox. There's plenty of geographical evidence that rivers periodically flowed across the planet's surface. Yet in the time period when these waters are supposed to have run—three ...

Early Titan was a cold, hostile place for life

Titan is a mysterious orange-socked moon of Saturn that is exciting to astrobiologists because it has some of the same kinds of chemicals that were precursors to life on Earth. It also has a hydrological cycle that allows ...

Titan's was atmosphere created by gases escaping the core

A decade ago, a tiny but mighty probe descended into the soupy atmosphere of Titan. This moon of Saturn is of great interest to astrobiologists because its chemistry and liquid cycle remind us of what the early Earth could ...

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