Why NASA needs an Asteroid Deflection Technology Development program, rather than an Asteroid Redirect Mission.

"I worked up a lather on that one," quipped NASA spacewalker Barry "Butch" Wilmore. "You guys have done just a superb job," noted Mission Control.

United Launch Alliance’s (ULA) plan to field a new rocket engine with Blue Origin called the BE-4 is only step one of a larger strategic plan to take the company from a sole-source benefactor mentality to competing in a burgeoning commercial market.

"...both explanations defy our current understanding of Mars' upper atmosphere," says European led study team.

Russia's Progress 58, or M-26M, is carrying 3.1 tons of propellant, water, compressed oxygen, spare parts, research gear and other dry goods.

Aviation Week has covered scores of technological triumphs over its history, but no achievement received as much prominence as the Apollo 11 moon landing.

The U.S. Air Force’s on-again, off-again affair with “operationally responsive space” concepts appears to be heating up once more.

A satellite conceived by then-Vice President Al Gore 17 years ago as a real-time whole-Earth imager, and later converted to an early warning "buoy" for solar storms, is on its way to its parking spot 1 million mi. from Earth after launch on a SpaceX Falcon 9.