A robotic Japanese cargo ship arrived at the International Space Station Monday (May 25) to make one final delivery before its fleet is retired.

The Japan Aerospace Exploration Agency (JAXA) has said that it will launch the first HTV-X new resupply vehicle to the ...

The HTV-3X would be the size of a conventional fighter jet. Lockheed is also working on a hypersonic spy plane that was announced in 2013.