HOUSTON, May 31 (UPI) -- U.S. space officials said exhaust from NASA's Phoenix spacecraft has exposed either rock or ice beneath the Mars lander.

LONDON, June 27 (UPI) -- The Mars Odyssey spacecraft has detected the best evidence yet of water on Mars.

The European Space Agency, on its esa.int Web Site, asks the ultimate question: "Is life a highly improbable event or is it rather the inevitable consequence of a rich chemical soup available everywhere in the cosmos?"

CAPE CANAVERAL, Fla., May 28 (UPI) -- A NASA probe has discovered vast quantities of what is likely frozen water beneath the dry, dusty soils of Mars, scientists announced Tuesday.

PASADENA, Calif., March 1 (UPI) -- An abundance of hydrogen, the first look at Mars by night and tantalizing glimpses of mineral deposits in the planet's crust are among the first observations of a new space probe that after just two weeks has raised scientists' expectations of what will b