Making the presentation will be Dr. Essam Heggy, a research scientist in the Radar Science Group at the NASA Jet Propulsion Laboratory and a visiting associate in geology at the California Institute ...

This image, taken by ESA’s Rosetta navigation camera, was taken from a about 53 miles from the center of Comet 67P/Churyumov-Gerasimenko on March 14, 2015. The image resolution is 24 feet per ...