Rocks sampled by the Curiosity rover suggest that Gale Crater once contained liquid water lakes that endured for potentially thousands of years at a time, shown in this artist’s illustration.
JPL-Caltech/NASA, ESA, DLR, FU Berlin, MSSS
COVERED WITH CROPS This false-color map of Ceres obtained by the Dawn spacecraft highlights the dwarf planet’s newly named features and its changing mineral composition. Red marks places that strongly reflect infrared light whereas blue regions reflect shorter wavelengths.
JPL-Caltech/NASA, UCLA, MPS, DLR, IDA
Salts deposited in dark streaks on Mars, such as these in the nearly 1000-kilometer-long canyon Coprates Chasma, are left behind by contemporary seasonal water flows, a new study suggests.