HOUSTON, April 6 (UPI) -- A U.S. astronaut says he's using Twitter to detail his last weeks of training for the fifth servicing mission to the Hubble Space Telescope.
HOUSTON, April 6 (UPI) -- The U.S. space agency says it will Webcast the landing of the Russian Soyuz spacecraft returning the Expedition 18 crew to Earth.
HOUSTON, March 24 (UPI) -- The U.S. space agency says astronaut Scott Parazynski is resigning to take a job in the private sector.
HOUSTON, Feb. 19 (UPI) -- The U.S. space agency was preparing for a Wednesday return to Earth and the end of STS-122's 13-day, 5.3 million-mile space mission.
HOUSTON, Dec. 10 (UPI) -- The U.S. space agency has announced the retirement of astronaut Robert Curbeam Jr., a veteran of three space shuttle missions.
WASHINGTON, Nov. 28 (UPI) -- The U.S. space agency says it will test one of its concepts for astronaut lunar housing in the harsh climate of the Antarctic.
WASHINGTON, Nov. 6 (UPI) -- The National Aeronautics and Space Administration plans to honor Mercury astronaut Scott Carpenter with its Ambassador of Exploration Award.
SEATTLE, Nov. 8 (UPI) -- NASA says it will honor former astronaut Charles "Pete" Conrad for his involvement in the U.S. space program with the Ambassador of Exploration award.
WASHINGTON, Dec. 8 (UPI) -- John Young, 74, the oldest U.S. astronaut, said he is retiring after four decades.
CAPE CANAVERAL, Fla., Jan. 21 (UPI) --