A, the unmanned experimental aircraft that holds the world record for the fastest flight by an air-breathing jet. -As part of ...

Orbital ATK (NYSE: OA), a global leader in aerospace and defense technologies, today announced that its Pegasus® rocket successfully launched the Cyclone Global Navigation Satellite System (CYGNSS) ...

NASA's experimental X-43A didn't have a pilot and couldn't fly independently, but its blisteringly high speeds showed that ...

Update, 2 p.m. Monday, Oct. 29: Engineers are reviewing data from a nearly five-hour flight test the Stargazer and mated Pegasus XL rocket performed Sunday, starting at 11 a.m. A new target launch ...

A Pegasus XL rocket rides beneath a modified L-1011 Stargazer jet. A Pegasus launch is scheduled for 1:11 a.m. Sunday after the carrier plane lifts off from Vandenberg Space Force Base. (Contributed ...

Northrop Grumman's Pegasus XL rocket, seen here attached to its L-1011 aircraft, has suffered technical problems that has delayed the launch of a NASA satellite until the second quarter of 2019.

A spacecraft technician is performing closeout work inside the fairing that will be installed around NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) spacecraft in a processing facility at ...

Update: Wednesday morning's attempt has been scrubbed due to undisclosed technical issues. A second attempt will be scheduled as soon as teams know more, according to Northrop Grumman, but the ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. HUNTSVILLE, Ala. – It’s not often we get to ...

Northrop Grumman has launched NASA’s ICON mission aboard its Pegasus XL rocket on Thursday following a lengthy standdown that began during the initial attempt last November when an electrical short ...

The delays continue for a NASA mission that aims to study the interaction between Earth and space weather in the upper atmosphere. Before 3 a.m. Wednesday, teams scrubbed a first attempt to launch a ...