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    NASA ‘Go’ for Liquid Oxygen Loading

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    NASA Launch Manager Tim Dunn (in the center of the photo at right) has given his "go" to proceed with loading liquid oxygen into the rocket's first stage. "The NASA team is ready for SMAP cryo tanking," Dunn declared after a quick poll of his team.

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    Weather Update

    The weather forecast continues to look good for launch this morning from Vandenberg Air Force Base. Skies are partly to mostly cloudy, there's nothing significant on the radar, and winds are light at 9 to 10 knots. There are no watches or warnings in effect, and weather is "green" on all constraints, according to 1st …

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    How SMAP Works

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    SMAP will produce accurate, high-resolution results through the combined efforts of its two instruments, a radar and a radiometer. The radar emits a signal, then measures the backscatter that bounces back from Earth. The radiometer, on the other hand, simply records the microwave signal our planet naturally emits. "Active Passive" in the mission's name refers …

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    Why Study Soil Moisture?

    Think for a moment about the soil beneath your feet or outside your window. It is damp, dry, or frozen? Maybe it's flood-prone, or dry to the point of cracking. Locally and globally, soil moisture matters. Water in Earth's soil represents only a small percentage of our planet's total quantity of water. But food crops …

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    SMAP Awaits Liftoff; Countdown Coverage Begins Now

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    NASA's Soil Moisture Active Passive observatory is nearly ready for its ride into Earth orbit aboard a United Launch Alliance Delta II rocket. Countdown activities are in progress at Space Launch Complex 2 on California's Vandenberg Air Force Base. Liftoff is slated for 6:20 a.m. PST, 9:20 a.m. EST, the opening of a three-minute launch …

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    Mobile Service Tower Rollback

    Delta II Rocket with SMAP

    The mobile service tower at Space Launch Complex 2 is rolled away from the United Launch Alliance Delta II rocket late Wednesday. Photo credit: NASA/Bill Ingalls

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    The Reveal

    The Soil Moisture Active Passive (SMAP) mission is one step closer to launch. On January 28, the mobile service tower (top) rolled back to reveal the Delta II rocket (second image). Liftoff of the Delta II rocket and its satellite cargo is targeted for launch from Vandenberg’s Space Launch Complex 2 at 6:20 a.m. PST […]

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    Countdown Coverage Begins at 7 a.m. EST

    Join us for continuous countdown coverage Thursday morning beginning at 7 a.m. EST. Liftoff of NASA's SMAP spacecraft aboard a United Launch Alliance Delta II rocket is scheduled for 9:20 a.m. from Vandenberg Air Force Base in California. In the meantime, visit this page for in-person viewing information, and check out our new video highlighting …

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    Robonaut’s Legs Powered Up, Station Lowers Orbit

    The Expedition 42 crew worked Wednesday with fruit flies, a humanoid robot and a Dragon spacecraft. Also, Europe’s Automated Transfer Vehicle-5 fired its engines for nearly five minutes, slightly lowering the station’s orbit to prepare for an upcoming ISS Progress 58 resupply mission. Commander Barry Wilmore and Italian astronaut Samantha Cristoforetti packed gear inside the …

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