NASA's chief scientist will retire in 2022
He oversaw Curiosity, New Horizons and other major projects.
Dawn
After Math: The best kind of falling star
Numbers because how else will you count the sites you've been deplatformed from?
NASA says goodbye to its Dawn spacecraft after 11 years of service
Dawn investigated two asteroid belt bodies during its mission.We have two newsletters, why not sign up for both?
NASA's Dawn spacecraft takes a close-up of Ceres' brightest spot
The spacecraft is now in its final orbit.
Dawn probe spots organic materials on dwarf planet Ceres
NASA scientists also believe they're native to the dwarf planet.
Dwarf planet Ceres is 'oozing' with water
It's got more water (by weight) than Earth, and has the ice volcanoes to prove it.
NASA says Ceres' brightest crater is made of salt
The material was left behind by liquid that seeped from underground.
NASA's closest-ever Ceres photos reveal more odd shapes
The dwarf planet is pretty, but still mysterious.
