All systems are go for NASA's next launch to the Red Planet.
Melting polar ice doesn't raise global sea level evenly, like filling a sink. GRACE-FO can help scientists understand differences in sea level rise on the world's coastlines.
A week before NASA's next Mars launch, Vice President Mike Pence toured the birthplace of the InSight Mars Lander and numerous other past, present and future space missions.
A pair of new spacecraft that will observe Earth's ever-changing water cycle, ice sheets and crust is in final preparations for a California launch no earlier than May 19.
NASA's next mission to Mars, InSight, is scheduled to launch Saturday, May 5, on a first-ever mission to study the heart of the Red Planet.