Gamma-ray flares from SGR J1550-5418 may have arisen when the magnetar’s surface suddenly cracked, releasing energy stored within its powerful…
Expedition 18 commander Michael Fincke prepared to take a picture of his helmet visor with a digital camera during a…
Astronaut Rex Walheim pauses before the reviewing stand during the 56th Inaugural Parade on Tuesday, Jan. 20, 2009. He is…
