Jan. 10, 2008
Hang on to your cell phones, a new solar cycle is underway. Solar Cycle 24 began last week with the appearance of a magnetically "backward" high-latitude sunspot.
Dec. 28, 2007
NASA is bringing high-tech satellite images and visualization tools to bear on the unique environmental problems of Central America.
Dec. 21, 2007
NASA-funded astronomers are monitoring a Tunguska-sized asteroid that will pass within 30,000 miles of Mars on Jan. 30, 2008. Based on data currently available, the space rock has a 1-in-75 chance of actually hitting Mars and blasting a crater more than half-a-mile wide.
Dec. 20, 2007
Consider it an early Christmas gift: On Dec. 24th The Moonand Mars are putting on a beautiful late-night sky show.
Dec. 18, 2007
A powerful jet from a supermassive black hole is blasting a nearby galaxy and possibly causing profound problems for planets in the jet's path.
Dec. 14, 2007
The solar Physicscommunity is abuzz this week. No, there haven't been any great eruptions or solar storms. The source of the excitement is a modest knot of magnetism that popped up on the sun, possibly heralding the start of a new solar cycle.
Dec. 11, 2007
NASA's fleet of THEMIS satellites have made some surprising new discoveries about outbursts of Northern Lights and the source of their power. The discoveries include giant magnetic ropes that connect Earth to the Sun and explosions in the outskirts of Earth's magnetic field.
Dec. 6, 2007
Astronomers using Japan's Hinode spacecraft have discovered a major new form of solar activity: abundant x-ray jets.
Dec. 3, 2007
Mark your calendar: The best meteor shower of 2007 peaks on Friday, December 14th.
Nov. 30, 2007
From the deserts of the American southwest to the pine forests of the Deep South, drought-weary residents have one thing on their minds: "I wish it would rain!" Technically, what they should be wishing for is "more streamflow." Find out why in today's story.