HOUSTON, July 13 (UPI) -- NASA says the space shuttle Discovery astronauts gathered valuable data Wednesday during their third spacewalk of the current mission.

HOUSTON, July 11 (UPI) -- The shuttle Discovery astronauts, along with the crew of the International Space Station, Tuesday transferred more items from the shuttle into the ISS.

HOUSTON, July 8 (UPI) -- Astronauts Piers Sellers and Mike Fossum conducted a spacewalk Saturday to determine whether a boom could be used to make repairs to the spacecraft.