Orbital Sciences Corp. doesn’t expect its planned merger with Alliant Techsystems Inc. to be derailed by the explosion of its Antares rocket in Virginia, the company’s chief executive said ...

Orbital Sciences Corp. made final preparations Tuesday for the first test flight of its Antares rocket, a new commercially-built two-stage booster designed to launch unmanned cargo ships to the ...

A rocket from Orbital Sciences successfully blasted off Wednesday at 10:58 a.m. EST, carrying the second private cargo craft ever on a supply mission to the International Space Station.

The Orbital Sciences Corporation said today that it had agreed to buy MacDonald, Dettwiler & Associates for about $67 million in stock. Orbital, which is based in Dulles, provides space products ...

Orbital Sciences Corporation was an American company specializing in the design, manufacture and launch of small- and medium- class space and rocket systems for commercial, military and other ...

Two days after the unsuccessful launch of an unmanned Orbital Sciences Corp. rocket that was to carry supplies to the international space station, the company indicated the main-engine system ...

Orbital Sciences Corp (ORB) manufactures satellites and launches rockets in the defense industry and provides NASA with much-needed services, and the company displays encouraging financial metrics ...

Even before this week's fiery explosion of an unmanned rocket bound for the space station, executives at Orbital Sciences Corp. had been working on a plan to retire the problem-plagued engines ...

But sometimes, a lower stock price is just a cheaper price you have to pay to own a great company. Let us count the ways. In Q2 2014, Orbital Sciences reported: Revenues of $318 million, down 4.5% ...

After the exit of launch services provider Space Exploration Technologies (SpaceX) Corp. as its rocket subcontractor, Stratolaunch Systems has turned to Orbital Sciences Corp. of Dulles, Va., to ...

In the late afternoon of Feb. 6, Orbital Sciences Corp. executives and rocket scientists gathered in the auditorium of the company's Dulles headquarters and watched a live video feed of a 50-foot ...