When the ancient Greeks faced the Persians in the Battle of Artemisium, they set the tone for the Battle of Salamis.

See footage of the Orion Spacecraft a little over an hour before its "outbound powered flyby burn". The spacecraft was less than 4,500 miles away (7,242 km) and was traveling at 757 miles per hour ...

NASA's Space Launch System (SLS) continues to make progress toward its Artemis 2 mission planned for next year; SLS is ...