March 26, 2013
A comet is heading for Mars, and there is a chance that it might hit the Red Planet in October 2014. An impact wouldn't necessarily mean the end of NASA's Mars program. But it would transform the program along with Mars itself.
March 21, 2013
The European Space Agency's Planck spacecraft has released the most detailed map ever made of the oldest light in the universe, revealing new information about its age, contents and origins.
March 15, 2013
Comet Pan-STARRS has survived its encounter with the sun and is now emerging from twilight in the sunset skies of the northern hemisphere. A NASA spacecraft has beamed back spectacular pictures of a "wild and ragged" tail behind the comet's active nucleus.
March 12, 2013
An analysis of a rock sample collected by NASA's Curiosity rover shows ancient Mars could have supported living microbes.
March 10, 2013
Vegetation growth at Earth's northern latitudes increasingly resembles lusher latitudes to the south, according to a NASA-funded study. "It's like Winnipeg, Manitoba, moving to Minneapolis-Saint Paul in only 30 years," says one of the lead researchers.
March 8, 2013
Using data from an aging NASA spacecraft, researchers have found signs of an energy source in the solar wind that has caught the attention of fusion researchers.
March 7, 2013
NASA Science has just created the newest form of tracking satellites. The Interactive Satellite Tracker, or iSat, is now available and is conveniently launched in your browser.
March 1, 2013
Something unexpected is happening on the sun. 2013 is supposed to be the year of Solar Max, but solar activity is much lower than expected. At least one leading forecaster expects the sun to rebound with a double-peaked maximum later this year.
Feb. 28, 2013
Earth's radiation belts were one of the first discoveries of the Space Age. A new finding published in today's issue of Science shows that we still have much to learn about them. NASA's twin Van Allen Probes, launched just last August, have revealed a previously unknown third radiation belt around Earth.
Feb. 26, 2013
Two weeks after an asteroid exploded over Russia's Ural mountains, scientists are making progress understanding the origin and make-up of the unexpected space rock. This week's ScienceCast presents their latest results.