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 ...

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 ...

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 ...

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 ...

NASA successfully launched its first Earth satellite designed to collect global observations of the vital soil moisture hidden just beneath our feet. The Soil Moisture Active Passive (SMAP) ...