Tantalized by images from NASA's Hubble Space Telescope and ground-based data, scientists thought the giant asteroid Vesta deserved a closer look. They got a chance to do that in 2011 and 2012, when NASA's Dawn spacecraft orbited the giant asteroid, and they were able to check earlier conclusions.
As the U.S. government budget crisis enters a second week, there are concerns that the rivalry between Democrats and Republicans in Congress may bring the United States to default, which would cause domestic and global economic woes. The world is observing developments in the U.S. capital with bewilderment, as well as concern.
The type of estrogen taken as a pill to treat menopause symptoms could make a difference in the risk of clot formation.
While pounding nails on a roof extension for his shed this summer, Scott Rupp heard a roar that almost scared him off the roof. Three planes with bellies full of fire retardant swooped low, then banked over the mountain behind his home.