Mission control confirmed end of operations at 3:40 p.m. EDT (1934 UTC), when no signal was detected by NASA’s Deep Space Network station at Goldstone.
There may be an ice cap at Pluto's pole, as seen in the most recent images from the New Horizons spacecraft, now only 11 weeks from its historic flyby on July 14.
Unpiloted craft carries 6,000 pounds of food, fuel, and supplies for International Space Station. Thursday's rendezvous with ISS cancelled. The cargo craft may be lost.
Deadline for submissions in the NameExoWorlds contest is June 15, 2015. Fifteen stars and 32 planets (47 objects total) in 20 solar systems available for naming.
A new NASA collaboration will use a systems science approach - looking at the big picture, cutting across different scientific disciplines - to seek alien life.
Why are astronomers excited about the first directly obtained visible light spectrum - or rainbow array of visible colors - bounced from the surface of an exoplanet?
Dawn spacecraft has reacquired images of Spot 5, the mysterious bright double feature on the dwarf planet Ceres. The bright spots look ... as strange as ever.