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Space shuttle Discovery crew right to left: mission specialist Jose Hernandez, mission specialist Nicole Stott, European Space Agency astronaut Christer Fuglesang, of Sweden and mission specialist Danny Olivas walk out of the Operations and Check-out building at the Kennedy Space Center at Cape Canaveral, Fla. Friday Aug. 28, 2009.
Houston, we had a problem.
That left spacewalkers Danny Olivas and Nicole Stott to complete their mission while being supervised by their colleagues inside the international space station. The blackout occurred after the astronauts had already disconnected an ammonia tank, the main task of the 6.5 hour walk. On Thursday, astronauts will install a replacement tank of coolant, according to Reuters.
Last weekend, space shuttle Discovery arrived at the space station to delivery supplies and a treadmill bearing comedian Stephen Colbert's name. The shuttle is set to return to Earth on September 10.
Get More: Reuters