WASHINGTON, Dec. 4 (UPI) -- The U.S. space agency says it is postponing the launch of its Mars Science Laboratory until 2011.

PASADENA, Calif., Nov. 18 (UPI) -- NASA is offering U.S. students the opportunity to name the space agency's new Mars Science Laboratory.

WASHINGTON, Oct. 10 (UPI) -- NASA plans to launch a new exploration rover to Mars next fall, despite budget and technical concerns, a NASA official said Friday.

WASHINGTON, Sept. 16 (UPI) -- The U.S. space agency plans a Mars robotic mission to study that planet's climate history and potential habitability in greater detail than ever before.

PASADENA, Calif., July 16 (UPI) -- Mars once was home to lakes, rivers and other wet environments that possibly supported life, a study based on the U.S. space program's Mars venture shows.

TUCSON, May 26 (UPI) -- The U.S. space agency's rover Phoenix sent images of itself back from Mars to Earth Monday, showing it had landed and was ready to look for signs of life.

PASADENA, Calif., May 12 (UPI) -- The U.S. space agency says its Phoenix Mars Lander is on course for a May 25 landing on Mars.

WASHINGTON, Dec. 11 (UPI) -- The U.S. space agency is developing plans for the first mission designed to deliver Martian soil samples to Earth.

WASHINGTON, Oct. 23 (UPI) -- U.S. space agency scientists selecting landing sites for a Mars rover mission are using a new mineral-mapping camera to narrow their options.

WASHINGTON, Oct. 3 (UPI) -- The U.S. and Russian space agencies announced an agreement Wednesday for NASA spacecraft to fly Russian instruments to the moon and Mars.

PASADENA, Calif., Sept. 5 (UPI) -- The National Aeronautics and Space Administration says the latest U.S. mission to Mars -- the Phoenix Mars Lander -- has passed two in-flight checks.

SVALBARD, Norway, Aug. 15 (UPI) -- An international group of space scientists and engineers is in Svalbard, Norway, field-testing instruments for future Mars missions.

CAPE CANAVERAL, Fla., Aug. 7 (UPI) -- Lockheed Martin's Phoenix Mars Lander is en route to Mars after being launched on a United Launch Alliance Delta II booster.

CAPE CANAVERAL, Fla., Aug. 3 (UPI) -- NASA's Phoenix Mars Lander is preparing for launch Saturday from Cape Canaveral, Fla., on a voyage to Mars.

CAPE CANAVERAL, Fla., July 31 (UPI) -- The National Aeronautics and Space Administration postponed the scheduled Friday launch of the Phoenix Mars Lander for 24 hours. The lander, to be carried into space aboard a Delta II rocket, was rescheduled for liftoff at one of two Saturday launch times