With the loss of the SpaceX Falcon9/Dragon resupply mission, the U.S. is temporarily without the means to launch astronauts or cargo to the International Space Station.

Falcon 9 launch failure raises near-term questions about supplies for space station crew and could complicate SpaceX's push to launch national security payloads.

A roundup of this week's top stories in aerospace and defense.

"It's definitely a 'once in a professional lifetime' opportunity," says Erik Kuulkers, the European Space Agency's Integral project scientist.

Retired NASA astronaut Clay Anderson's autobiography takes a hard look at the often stressful lives and personal struggles of America's shuttle and space station era pioneers and their management.

BlackSky Global, part of Spaceflight Industries, plans to launch a 60-satellite constellation to provide 1-meter imagery of the Earth with a quick turnaround.

NASA is upping its ante in the cubesat arena, with a request for proposals (RFP) designed to spur a commercial launch industry dedicated to the tiny spacecraft, and with separate plans to send two cubesats on a piggyback mission to Mars next year.

India is preparing to carry out an experimental flight of its reusable launch vehicle, a senior space scientist says.