In this 59-second time exposure photo released by Anthony Galvan III, the Taurus XL rocket carrying NASA's Glory satellite launches from Vandenberg Air Force Base in Goleta, Calif., early Friday, March 4, 2011. NASA says in a statement that a protective shell atop the rocket did not separate from the satellite as it should have about three minutes after the launch. The rocket failed to reach orbit. (AP Photo/Anthony Galvan III) NO SALES
In this image taken from video released by NASA, all twelve Discovery and International Space Station crew members wave during a call from President Barack Obama Thursday, March 3, 2011. From top left, Nicole Stott, Paolo Nespoli, Oleg Skripochka, Alexander Kaleri, Dmitry Kondratyev, commander Scott Kelly, Catherine Coleman, and Steve Bowen; from bottom left, Alvin Drew, pilot Eric Boe, commander Steve Lindsey, and Michael Barratt. (AP Photo/NASA)
The Taurus XL rocket that blasted off carrying NASA's Glory satellite from Vandenberg Air Force Base early Friday March 4, 2011, failed to reach orbit. NASA says in a statement that a protective shell atop the rocket did not separate from the satellite as it should have about three minutes after the launch. (AP Photo/Bryan Walton - Santa Maria Times)
This image provided by NASA shows the encapsulated Glory spacecraft sitting atop the Taurus XL rocket and awaiting launch on the pad at Vandenberg Air Force Base's Space Launch Complex in Calif., Feb. 22, 2011. Vandenberg Air Force Base officials sid the Taurus XL rocket carrying NASA's Glory satellite lifted off about 2:10 a.m. PST Friday, March 4, 2011, from the base. However the fairing surrounding the Glory spacecraft failed to separate properly preventing the spacecraft from reaching orbit. (AP Photo/NASA)
In a photo provided by NASA, the space shuttle Discovery is seen shortly after the Rotating Service Structure was rolled back at launch pad 39A, at the Kennedy Space Center in Cape Canaveral, Florida, on Wednesday, Feb. 23, 2011. Discovery, on its 39th and final flight, will carry the Italian-built Permanent Multipurpose Module (PMM), Express Logistics Carrier 4 (ELC4) and Robonaut 2, the first humanoid robot in space to the International Space Station. (AP Photo/NASA/Bill Ingalls)
NASA crews prepare Space Shuttle Discovery for its scheduled launch on Thursday for an 11-day trip to the International Space Station — its 39th mission. No other craft has flown in space as much. (Associated Press)
FILE - This 1986 file picture shows part of the Milky Way galaxy as seen from Australia. Scientists have estimated the first cosmic census of planets in our galaxy and the numbers are astronomical: at least 50 billion planets in the Milky Way. At least 500 million of those planets are in the not-too-hot, not-too-cold zone where life could exist, scientists announced Saturday, Feb. 19, 2011. The numbers were extrapolated from the early results of NASA's planet-hunting Kepler telescope. (AP Photo)
This photo released by NASA/JPL on Feb. 15, 2011 shows an image from NASA's Stardust mission of comet Tempel 1 taken on Feb. 14, 2011. The Stardust craft zipped past a comet half the size of Manhattan during a Valentine's Day rendezvous that scientists hoped would shed light on these icy solar system bodies. At nearest approach, the craft passed within 112 miles of the potato-shaped comet, closer than the original prediction. (AP Photo/ NASA/JPL/ Caltech/Cornell)
Capt. Mark E. Kelly, husband of wounded Rep. Gabrielle Giffords, will be aboard Endeavour for its final flight in April, NASA confirmed Friday Jan. 4, 2011. (AP Photo/NASA, File)
