NASA's Mars Reconnaissance Orbiter has revealed frozen water hiding just below the surface of mid-latitude Mars. The spacecraft's observations were obtained from orbit after meteorites excavated fresh craters on the Red Planet.
Scientists controlling instruments on the orbiter found bright ice exposed at five Martian sites with new craters that range in depth from approximately 1.5 feet to 8 feet. The craters did not exist in earlier images of the same sites. Some of the craters show a thin layer of bright ice atop darker underlying material.
NASA has announced that the next launch attempt for the space shuttle Discovery will be no earlier than 12:22 am Friday, August 28th at NASA’s Kennedy Space Center in Cape Canaveral, Florida.
Wednesday's launch attempt was postponed after an indication that a valve in the shuttle's main propulsion system failed to perform as expected during fueling of the shuttle's external fuel tank. NASA managers officially postponed Wednesday's launch attempt because of uncertainty about whether a valve that was commanded to be closed actually was closed. The valve is associated with the fill and drain plumbing of the main propulsion system within the shuttle's aft compartment.