Mercury, Venus, Neptune, Saturn, Uranus and Jupiter will appear together shortly after sunset on Feb. 28 — but is this the "planet parade" we've been waiting for?

Several robotic spacecraft orbiting the Moon can take detailed pictures of its surface, so why send people around the Moon? A ...

These major planetary shifts are turning points, reshaping everything from how you see yourself to the life you’re trying to ...

Plasma propulsion transforms an inert propellant – often hydrogen – into plasma, a superheated mix of ions and electrons. Magnetic fields then funnel and accelerate the ...

NASA's Perseverance Mars rover has completed the first drives on another world that were planned by artificial intelligence.