Photo released from the International Space Station (ISS) shows that Discovery is appoaching to the Station.

WASHINGTON, July 28 (Xinhuanet) -- The US space shuttle Discovery on Thursday successfully docked with the International Space Station (ISS), two days after blasting into space on the first space shuttle mission since the Columbia disaster in 2003.

    After reaching the the doorstep of the ISS, the shuttle performed an unprecedented back flip to allow those aboard the outpost to photograph theshuttle's belly for signs of damage.

    "Everything that we see at this point says that the orbiter isin fact a clean bird," NASA Administrator Michael Griffin said after the somersault.

    Discovery was just 180 meters beneath the station whenCommander Eileen Collins manually steered the shuttle's nose upwardand slowly flipped the spacecraft over.

    The maneuver came after a huge setback Wednesday, when NASA decided to ground future shuttle flights because a chunk of insulating foam flew off Discovery's fuel tank during liftoff as it did in Columbia's doomed mission.

    Discovery was the first shuttle to return to orbit since Columbia broke apart over Texas as it returned to Earth on Feb. 1,2003. All seven astronauts aboard died. Enditem