NASA astronaut Megan McArthur, the first woman to pilot a SpaceX Dragon spacecraft, retires after 20 years. She logged 213 days in space, flew two missions, and was the last to handle the Hubble ...

In just days, a group of astronauts — three Americans and one Canadian — is slated to fly roughly 5,000 miles past the far side of the moon, the farthest humans have ever traveled in space.

Adrianos Golemis, a doctor for the European Space Agency, has become the first Greek to pass the organization's test to ...