The joint NASA-French satellite will help scientists better monitor and understand rises in global sea level, study the world's ocean circulation and its links to Earth's climate.
The joint NASA-French satellite will help scientists better monitor and understand rises in global sea level, study the world's ocean circulation and its links to Earth's climate.
The lander scoops up soil to search for possible conditions for life in the Martian arctic.
Later this summer NASA will attempt to deploy and operate the first spacecraft in low Earth orbit propelled only by the power of sunlight.