WATCH LIVE TONIGHT: NASA''s Delta Aquarid Meteor Shower Webcast
NASA will host a live webcast tonight (July 29) to showcase the peak of the annual Delta Aquarid meteor shower and you can watch it live online here.
NASA Prepping Mars Probes, Rovers for Close Comet Flyby
NASA''s Mars Atmosphere and Volatile EvolutioN mission (MAVEN) is closing in on the Red Planet. At the same time, an interloper, comet Siding Spring, is also approaching.
Rising Moon and Milky Way Glow Above Maine Lighthouse (Photo)
Astrophotographer Jon Secord took this image from Pemaquid Lighthouse in Pemaquid, Maine on June 21.
Aquanautics: Why Astronauts Train Underwater | Video
NASA astronaut Mark Vande Hei explains how he trains for assignments in space during a long stay in the Aquarius underwater laboratory in the Florida Keys National Marine Sanctuary.
White Dwarf + Red Giant = Thermonuclear Explosion | Animation
The Fermi Gamma-Ray Space Telescope detected a flash-blast emanating from white dwarf star V407 Cyg as the stellar wind of its red giant companion impinges, like spraying lighter fluid at a raging fire.
NASA''s Next Mars Rover to Collect Martian Samples, Carry Lasers
NASA''s next big Mars rover launching in 2020 will be packed to the brim with high-tech instruments, including twin lasers, a water-hunting radar and a new drill to collect samples of Mars. See the seven science instruments on NASA''s Mars rover 2020.
LISTEN LIVE NOW: NASA Telecon with Scientists about Mars 2020 Rover
NASA will host a media teleconference with the principal investigators responsible for the seven instruments chosen to fly aboard the space agency''s 2020 Mars rover. The news conference will begin at 3 p.m. EDT (1900 GMT).
Going Nova: Star Explosions Unleash Gamma-Ray Blasts
Gamma rays, the most powerful form of light, may erupt from star explosions known as novas surprisingly often, but the way these gamma rays remains a mystery, scientists say
Weird Supernova May Blow Away Star Explosion Theories
Light from a radioactive metal forged inside a supernova blast could prompt a rethink of how some star explosions occur. See the latest discovery from the supernova SN 2014J.
NASA''s Mars Rover 2020 Mission in Pictures (Gallery)Stories 1 - 10 of 4421
See photos and images of NASA''s next Mars rover, a 1-ton robot launching toward the Red Planet in 2020.