These cosmic filaments contain 12 trillion solar masses of 10-million-degree gas, helping solve the "missing matter" mystery.

A European company that seeks to develop orbital spacecraft for cargo, and eventually humans, took a step forward this week ...

Europe's drive to create a satellite manufacturing champion is taking longer than planned, and debates over costs, ...

The Space Launch System rocket and Orion capsule of the Artemis I mission in 2022 stands tall during one of its launch attempts. According to a proposed budget, the rocket and capsule will retire ...