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

According to scientists, this ambipolar electric field is thought to be just as crucial to Earth as both gravity and ...

Scientists have long sought the particle that carries the force of gravity, but a new theoretical model tosses out that idea ...

32,615 people played the daily Crossword recently. Can you solve it faster than others?32,615 people played the daily Crossword recently. Can you solve it faster than others?

Time has an arrow: It only ever seems to move in one direction. The future is always unknown to us, while the past forever remains locked and inaccessible. And yet, the vast majority of the laws ...

Force is what helps our muscles get stronger ... The body has to adapt again when it is thrust back to earth. When you get ...