Oct. 31, 2013
Ten years after the original Halloween Storms, the sun is putting on a repeat performance--albeit not nearly so scary.
Oct. 25, 2013
Astronauts aren't the only ones who need to worry about solar flares. High-latitude air travelers can also be exposed to significant doses of radiation during solar storms. A new computer model developed by NASA aims to help protect the public by predicting space weather hazards to aviation.
Sept. 24, 2013
Comet ISON is still more than two months away from its spectacular close encounter with the sun. Already, the brightening comet has become a good target for backyard telescopes in the pre-dawn sky.
Sept. 16, 2013
The full Moon closest to the northern autumnal equinox is coming this week. Don't miss the Harvest Moon.
Sept. 13, 2013
Sept. 12, 2013
In a surprising turn of events, researchers have realized that Voyager 1 left the solar system a year ago. This event sets in motion a new era of exploration of the realm between the stars.
Sept. 10, 2013
Sometimes, Earth mimics a supernova, producing a Terrestrial Gamma-ray Flash from the tops of thunderstorms. A new lightning sensor on the International Space Station could solve the mystery of these energetic bursts.
Sept. 3, 2013
A NASA-led team of scientists has uncovered strong evidence that soot from a rapidly industrializing Europe caused the abrupt retreat of mountain glaciers in the European Alps that began in the 1860s, a period often thought of as the end of the Little Ice Age.
Sept. 3, 2013
A NASA spacecraft slated for launch on Sept. 6 will fly to the Moon to investigate the tenuous lunar atmosphere. Researchers hope "LADEE" will solve a mystery that has been puzzling them since the days of Apollo.
Aug. 29, 2013
Proving that there is still much to discover about the landscape of Earth, data from a NASA airborne science mission has revealed an immense and previously unknown canyon hidden under a mile of Greenland ice.