Russian scientists have developed a plasma electric rocket engine that could enable travel to Mars in just one to two months.

Scientists are developing a new space propulsion system that uses water as fuel, promising a more sustainable way to explore ...

Astrophysical jets from black holes play a key role in cosmic evolution, impacting star formation and revealing insights ...

Researchers have discovered the largest black hole plasma jets ever in a galaxy almost 7 billion light years away from Earth.

Dozens of people walked Sunday along the banks of the Potomac River near Reagan National Airport, close to where an American Airlines jet and an Army Black Hawk helicopter collided Wednesday. (AP ...