Last week, India launched RISAT 1, a new Earth-observing satellite. How does its synthetic aperture radar compare to that of Envisat, which has fallen silent?
Posted by Jason Davis on 2012/04/11 12:29 CDT
A classified U.S. military satellite recently launched into an orbital inclination of 123 degrees. What makes this trajectory so unique? Pondering the answer affords the opportunity to learn some deceptively tricky concepts about the nature of all spacecraft orbits.
A few updates on the Space Launch System, NASA's next-generation deep exploration vehicle.
Posted by Emily Lakdawalla on 2011/09/08 01:01 CDT
The terrific launch photographer Ben Cooper is at the Cape waiting for GRAIL's Delta 2 rocket to take off, and last night he took this very cool photo.
Posted by Emily Lakdawalla on 2010/01/13 10:30 CST
2010 AL30 zipped past us harmlessly about five hours ago. Because of its one-year orbital period, many people speculated it might be a manmade object, but 2010 AL30 might, in fact, be artificial.