Conventional L-band microwave radiometer–based soil moisture products use algorithms that assume a static state and a constant vertical soil moisture distribution. This study assessed the retrieval ...

WASHINGTON — One of the two main science instruments on NASA’s $915 million Soil Moisture Active Passive (SMAP) spacecraft remains out of action more than a month after abruptly switching off, but ...

Scheduled for launch on Jan. 29, 2015, NASA's Soil Moisture Active Passive (SMAP) instrument will measure the moisture lodged in Earth's soils with an unprecedented accuracy and resolution. The ...

Mission managers for NASA’s Soil Moisture Active Passive (SMAP) observatory have determined that its radar, one of the satellite’s two science instruments, can no longer return data. However, the ...

A NASA team delivered in May a sophisticated microwave radiometer specifically designed to overcome the pitfalls that have plagued similar Earth-observing instruments in the past. Literally years in ...

A NASA satellite is poised for launch Thursday on a three-year $916 million mission to measure the amount of water in the top 2 inches of soil around the world to help scientists understand its ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. When it launches on January 29, a new satellite’s mission will be ...

NASA’s newest Earth-observing satellite SMAP, has triumphantly raised its “arm” and unfurled a huge golden antenna that it will soon spin up to rope the best soil moisture maps ever obtained from ...

One of the two science instruments aboard a NASA Earth-observing satellite that launched earlier this year has failed, agency officials say. The radar instrument on NASA's $916 million Soil Moisture ...

United Launch Alliance (ULA) has successfully conducted a rare Delta II launch on Saturday morning, at 6:22 am local, following a scrub on Thursday, along with a debonding of insulation on the booster ...

A United Launch Alliance Delta 2 rocket carrying a NASA climate research satellite was grounded Thursday by high winds above the Vandenberg Air Force Base launch site northwest of Los Angeles. There ...