NASA Awards Orbital Sciences Launch Services Contract for Hurricane-Forecasting CYGNSS Mission

The CYGNSS mission is comprised of eight Low-Earth Orbiting (LEO) spacecraft (S/C) that receive both direct (white lines) and reflected (blue lines) signals from GPS satellites. The direct signals pinpoint LEO S/C positions, while the reflected signals respond to ocean surface roughness, from which wind speed is retrieved. GPS bi-static scatterometry measures ocean […]

Launch of IRIS on Orbital Pegasus XL Slips a Day

The planned launch of an Orbital Pegasus XL rocket has been delayed a day due to range power issues. Photo Credit: Randy Beaudoin, VAFB / NASA

The launch of an Orbital Sciences Corporation Pegasus XL rocket with NASA’s Interface Region Imaging Spectrograph (IRIS) will have to wait a little longer. The launch is […]

Pegasus-XL Ready to Air-Launch NASA's IRIS Sun-Watching Satellite

Deployed from beneath the L-1011 aircraft, Pegasus-XL utilizes three solid-fuelled stages to deliver payloads weighing up to 980 pounds into low-Earth orbit. Wednesday’s flight will be the 42nd Pegasus mission since April 1990. Photo Credit: NASA / Orbital Sciences Corp.

Orbital Sciences Corp. is ready to boost its 42nd Pegasus air-launched rocket aloft […]

NASA’s Newest Sun-Watcher Arrives on the West Coast

The IRIS spacecraft arrives at Vandenberg Air Force Base, Calif., on 16 April, ahead of its scheduled flight aboard a Pegasus air-launched booster on 28 May. Photo Credit: NASA

Six weeks before its scheduled launch, NASA’s Interface Region Imaging Spectrograph (IRIS) satellite was delivered to Vandenberg Air Force Base, Calif., last week for […]