Space Tugboat Could Help Move Inexpensive Payloads in Orbit

 
A Seattle company has announced plans to build a new spacecraft that, like its Earth-bound counterparts, is all about moving other vehicles around. Spaceflight Inc. is designing what it’s calling the Sherpa to fulfill the need for an orbital tugboat that can move payloads, such as satellites, to different orbits around Earth.

Navy Wants Ultra-Violet Cloaking Device for Jet Fighters

The U.S. military is already investing tens of billions of dollars to make its jet fighters less visible to radars and infrared sensors. Now the Pentagon wants the defense industry to come up with a system that can cloak fighters from another telltale type of radiation: ultra-violet energy from the sun.