DARPA plans to demonstrate a nuclear thermal propulsion (NTP) system that can be assembled on orbit to expand U.S. operating presence in cislunar space.

What NASA’s New Horizons spacecraft observed on its flyby of the distant Kuiper Belt Object Ultima Thule—especially the object’s strange shape —has sent scientists back to the drawing board.

With the first launch for a global broadband satellite network behind it, OneWeb has raised another $1.25 billion from investors.

The complete engine is designed to provide air-breathing thrust from the runway to Mach 5 and beyond for hypersonic aircraft and, in rocket mode, low-cost access to space.

SpaceX’s first Crew Dragon, nearing the end of an unmanned, six-day demonstration mission, undocked from the International Space Station (ISS) on March 8, aiming for a splashdown in the Atlantic Ocean.

Following up on the legacy of NASA’s aging Great Observatories may depend on breaking a cost spiral that has delayed the JWST and threatened the WFIRST.

Acknowledging the reusable rocket technology pioneered by SpaceX and Blue Origin, the U.S. Air Force has dropped the word “expendable” from the name of its orbital launch services acquisition program.

The new vehicle, Dragon 2, is designed, built, owned and operated by SpaceX, with financial backing, technical expertise and oversight provided by NASA.