Data From Spirit Rover Provides Evidence for Acid Fog on Ancient Mars

False-color mosaic of Cumberland Ridge, with pie charts representing iron-bearing mineralogy. Image Credit: S. Cole, PhD thesis; background image: NASA/JPL/Cornell/Arizona State University; Moessbauer values from Morris et al. 2008 (doi: 10.1029/2008JE003201)

The various rover and lander missions on Mars have provided unprecedented glimpses into the planet’s past, including geological history and environmental conditions. […]

Here It Comes! Massive Downlink of Pluto Data Starts With Spectacular New Images

Perspective view of Pluto, composed of the latest high-resolution images. The entire expanse of terrain seen in the image is 1,100 miles (1,800 kilometers) across. Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

After a lull of several weeks, the downlinking of new data from the New Horizons spacecraft has begun, […]

Sinkholes on Titan: New Study Shows How Hydrocarbon Lakes May Form by Earth-Like Erosion

Colored mosaic of lakes near Titan’s north pole. Image Credit: NASA/JPL-Caltech/ASI/USGS

Saturn’s largest moon, Titan, has seas and lakes of liquid methane and ethane dotting its surface, but one question scientists have been trying to figure out is how the hollows in the ground, which hold the lakes, form to begin with. Now, […]