“The number is going to be in the billions; there’s no doubt about that,” Gen. John Hyten told the House Armed Services strategic forces subcommittee March 15. “But exactly where it comes out I don’t know."

India will launch 25 foreign satellites this year and next year using its indigenous launch vehicle as it strives to increase its presence in the global space launch market.

From Aviation Week's 100-year archive, our editors have selected the covers featured in this gallery as among the most striking depicting space-related events. See what makes each cover 'memorable' and vote for your favorite.

Aviation Week editors have selected the covers featured in this gallery as among the most remarkable from the magazine's 100-year archive. See what makes each cover 'memorable' and vote for your favorite.

NASA is funding Lockheed Martin to complete preliminary design of an X-plane demonstrator to show whether the shock-wave signature of a 100-120-seat low-boom supersonic airliner would be acceptable to the public, clearing the way for supersonic flight over land.

Leap days are pretty rare, of course, coming only once every four years. But when you publish a weekly magazine that’s dated on Mondays, Leap Day issues happen much less often.

The Last Man on the Moon, a moving film documentary that explores the life of former U.S. astronaut Gene Cernan, opened in select theaters across the U.S. last weekend.

Propellant troubles have forced SpaceX to abort the launch of the SES-9 commercial communications satellite for the second day in a row.