March 19, 2010
Grab your binoculars. The crescent Moon and the Pleiades star cluster are gathering for a close encounter on the first night of Spring. It's the best Moon-Pleiades meeting over the United States until the year 2023.
March 18, 2010
Researchers who once confidently stated that the Moon was bone-dry are now thinking the unthinkable: The Moon has so much water, there's actually a "lunar hydrosphere." International spacecraft have recently discovered no fewer than three "flavors" of moonwater and no one knows when the discoveries will end.
March 12, 2010
A massive "current of fire" on the sun has started running at high speed, surprising researchers and challenging some models of the solar cycle.
Feb. 26, 2010
NASA's venerable Mars rover Spirit is starting a second career as an explorer of the Martian core--but first it must survive the deadly Martian winter.
Feb. 18, 2010
NASA's Solar Dynamics Observatory amazed onlookers last week when it flew past a sundog and destroyed it. Must-see videos of the event captured shock waves from the rocket billowing through the sundog, eliciting cries of delight and amazement from the crowd below.
Feb. 10, 2010
Terrestrial gamma-ray flashes (TGFs) surge through thunderstorms at about the same altitude where commercial airliners fly. Do these blasts of gamma-radiation pose a hazard to air travelers?
Feb. 5, 2010
The Solar Dynamics Observatory (SDO), slated for liftoff on Feb. 9th, will make IMAX-quality movies of solar explosions, peer beneath the stellar surface to see the sun's inner dynamo, and--researchers hope--unravel the mysteries of solar variability.
Feb. 2, 2010
NASA's Hubble Space Telescope has observed a mysterious X-shaped debris pattern and trailing streamers of dust that suggest a head-on collision between two asteroids.
Jan. 29, 2010
There's a mystery in the skies of Earth: Something is producing bright flashes of gamma radiation in the upper atmosphere of our own planet. A new NASA-NSF mission called Firefly is going to investigate.
Jan. 26, 2010
NASA announced today that Mars rover Spirit cannot be freed from its Martian sandtrap. Now the rover will begin a second career as a stationary science platform.