When two hydrogen atoms get close enough, the electron from each atom feels an attraction from the proton in the other atom's nucleus. This attraction pulls the atoms together. The electrons end up ...

Dark energy is the placeholder name scientists have given to the unknown force causing the universe to expand faster and ...

A new map of cosmic expansion suggests that dark energy evolves over time, hinting that the universe doesn’t work the way we ...

More than 150 million metric tons of propylene are produced annually, making it one of the most widespread chemicals used in ...

When the lasers hit the pellet, the atoms "fuse" together, releasing energy in the process. That little fuel pellet is only about two millimeters in diameter. But the consequences could be huge.

U.S.-German startup Focused Energy, which aims to build power plants fueled by fusion, said on Monday it has signed an ...