Mars

Guess what these images are and earn your stripes as a cosmic sightseer

The space agency will decide whether the InSight heads to the Red Planet in mid-2018, or not at all

Welcome to the 21st century, where robots are doing geology on other worlds! In this edition we're exploring Mars's rich geologic history—and finding potential signs of microbial life

Faulty seismometer will delay the launch of the InSight lander for at least 26 months

After several previous failures, the historic rocket landing paves the way for a new era of faster, cheaper spaceflight

From progress on deciphering the strange features of dwarf planet Ceres to NASA's plans to play with Martian sand and a heroic rescue of Japan's Venus-bound spacecraft, it's been an interesting past couple of weeks

A collision between the Red Planet and its innermost moon, Phobos, could create a Saturn-like field of debris

Water from sources such as aquifers could last long enough to pool, with larger pools remaining liquid for at least a year, according to researchers

A new explanation for the strange grooves on the surface of the martian moon Phobos suggests that the entire satellite already shows signs of how it will eventually be destroyed.

New data from NASA's MAVEN mission reveals most of the Red Planet's atmosphere was stripped away

Our fear of contaminating the Red Planet with Earth microbes is hampering our search for life there

Scientists begin yearlong Red Planet simulation at Mauna Loa