May 26, 2015; 11:00 AM ET
Dry and seasonable weather is forecast for San Francisco this week. more >
Cool from today to Monday
Rises at 5:51 AM with 14:31 of sunlight, then sets at 8:22 PM
Rises at 1:56 PM with 12:33 of moolight, then sets at 2:29 AM
Two new studies hint at a richer picture of what’s happening on Saturn’s extraordinary icy moon Enceladus.
Just like drivers sometimes use snow to clean their car mirrors in winter, two Exelis Inc. engineers are practicing "snow cleaning'" on a test telescope mirror for the James Webb Space Telescope.
For the first time ever, researchers on Earth have been able to capture detailed images of the heat rising from an active volcano on another body in the solar system -- Jupiter.
The Andromeda galaxy is our Milky Way's nearest neighbor in space. The majestic spiral of over 100 billion stars is comparable in size to our home galaxy.