The European Rosetta spacecraft's Philae lander aims to be the first probe ever to safely land on a comet. Here's how to land on a spinning ice mountain in space. - Credit: By Karl Tate, Infographics Artist
For more than 50 years, NASA's robotic deep space probes have carried nuclear batteries provided by the U.S. Department of Energy. Even the crewed Apollo moon landings carried nuclear powered equipment.
After an extensive review process and passing a major development milestone, NASA is ready to proceed with final design and construction of its next Mars rover, currently targeted to launch in the summer of 2020 and arrive on the Red Planet in February 2021.