Isar Aerospace, the company behind the rocket, is still heralding the launch as a success due to the data it provided ...

Every time the temperature drops, a cloud passes overhead, or the sun sets, a plant makes a choice: Keep its microscopic ...

This new propulsion system could rewrite the rules of spaceflight—not to mention completely defy conventional physics.

The small nuclear power plants will use molten salt in their fuel, making them safer and more versatile and portable than traditional nuclear power plants.

Ninety years ago today, on March 28, 1935, Robert H. Goddard launched the first gyroscopically-stabilized liquid-fueled ...

Even if you don't know anything about watches, you've darn well heard of "Pepsi." And we're not talking about the drink.