Reaction wheels spin to help a spacecraft maintain attitude control, and Dawn, which is exploring th...

NASA aimed to launch shuttle Endeavour in the early morning darkness today with the last major piece...

The unmanned spacecraft enters into the asteroid belt of the solar system for the rest of the missio...

No clear thought yet about the future space programmes at NASA, including who will head the US space...

In its preparation for a flyby operation to Mars in February 2009, the spacecraft shuts its ion prop...