Contracts to SpaceX, Orbital ATK and Sierra Nevada for cargo resupply missions to the International Space Station (ISS) beginning in late 2019 are costing NASA more than twice what it paid under the first round of Commercial Resupply Services (CRS-1) awards, according to NASA's Inspector General.

The Sentinel-3B satellite, part of the European Union’s Copernicus Earth observation program, was successfully launched April 25 by a Rockot vehicle from Plesetsk, Russia.

Launch service operator Arianespace has postponed the next launch of the Ariane 5, after satellite owner Indian Space Research Organization (ISRO) decided to ship its spacecraft back to Bangalore.

Mars might be within reach of human explorers by the mid-2030s with an annual budget roughly equal to the International Space Station, according to a forum of Mars exploration experts.

The U.S. Air Force’s plan to trim the timeline for the next generation of missile warning Space-based Infrared System satellites may open up a huge opportunity for industry.

Researchers are prepared to forge ahead with the development of a new cooling technology for space systems.

By the narrowest of margins, the U.S. Senate on April 19 confirmed U.S. Rep Jim Bridenstine to become the next NASA administrator.

NanoRacks has completed the critical design review phase for the airlock it plans to install aboard the International Space Station in late 2019.