Earth Formed from Diverse Meteorite Mix
A match of silicon isotopes in terrestrial and lunar rock samples is revealing more about how both bodies really formed
Stories by Clara Moskowitz
Biggest Map Yet of Universe's Invisible Dark Matter Unveiled
Scientists hope that by plotting out the distribution of dark matter throughout space, they will come closer to understanding what it is
Russian Engineers Race to Save Troubled Mars Moon Probe
Phobos-Grunt appears to be stuck in Earth orbit. In two weeks, if its thrusters aren't restarted, the spacecraft will be lost completely
NASA Pinpoints Pacific Ocean Grave of Fallen UARS Satellite
The defunct Upper Atmospheric Research Satellite (UARS) reentered the atmosphere at 12:01 A.M. Eastern time (0401 GMT) on Saturday, falling into the Pacific at 14.1 degrees south latitude and 189.8 degrees east longitude...
Last Shuttle Astronauts Bid Historic Farewell to Space Station
Atlantis is on its way home for a final landing at NASA's Kennedy Space Center in Florida
Head Lines: Spotting a Fake Smile
Also: Men Who Can Move; Borrowed Identity; Speaking of Race; and Marrying Mom
Black Hole Firewall Mystery: Submit Your Questions for Physicist Joseph Polchinski
One of the architects of the idea that “firewalls” of high-energy particles border black holes will answer readers’ questions in a video chat
Review: Particle Fever
Reviews and recommendations from Scientific American
Book Review: The Extreme Life of the Sea
Reviews and recommendations from Scientific American
