The race to Mars has quietly become the defining contest of twenty-first century spaceflight, pitting a state-backed Chinese ...

The NASA Artemis II mission, set to lift off as soon as February, will mark the first time astronauts have aimed to venture beyond near-Earth orbit since 1972.

With an experiment launching to the International Space Station Monday (May 21), scientists will be able to create a temperature that's 10 billion times colder than the vacuum of space to focus in on ...