A mid-level solar flare, peaking on 3 May, was seen by NASA's Solar Dynamics Observatory. This flare was classified as an M5.7-class flare. M-class flares are the weakest ones. They…
Maybe because it appears as a speck of blood in the sky, the planet Mars was named after the Roman god of war. From the point of view of life as we know it, that's appropriate. The…
New observations by NASA's Hubble Space Telescope are expanding astronomers' understanding of the ways in which galaxies continuously recycle immense volumes of hydrogen gas and heavy…
Close to the globe, Earth's magnetic field wraps around the planet like a gigantic spherical web, curving in to touch Earth at the poles. But this isn't true as you get further from…
The NASA National Polar-orbiting Operational Environmental Satellite System (NPOESS) Preparatory Project (NPP) climate/weather satellite is undergoing flight environmental testing at…
In communities all across the US, travellers that went to the moon and back with the Apollo 14 mission are living out their quiet lives. The voyagers in question are not astronauts.…
NASA's Time History of Events and Macroscale Interaction during Substorms (THEMIS) spacecraft combined with computer models have helped track the origin of the energetic particles in…
Seen in X-rays, the entire sky is aglow. Even far away from bright sources, X-rays originating from beyond our galaxy provide a steady glow in every direction. Astronomers have long…
NASA's newest Earth-observing research mission is nearing launch. The Glory mission will improve our understanding of how the sun and tiny atmospheric particles called aerosols affect…
A wider range of asteroids were capable of creating the kind of amino acids used by life on Earth, according to new NASA research…