Dozens of times over the last decade NASA scientists have launched laser beams at a reflector the size of a paperback novel about 240,000 miles (385,000 kilometers) away from Earth. They announced ...

The properties of dense helium (He) — which happens to be a principal constituent of giant gas planets like Jupiter — at thermodynamic conditions between those of condensed matter and high-temperature ...

In day-to-day life, light seems intangible. We walk through it and create and extinguish it with the flip of a switch. But, like matter, light actually carries a little punch—it has momentum. Light ...

For the first time, a quantum radiation reaction in strong electromagnetic fields has been demonstrated experimentally by allowing electrons to collide with an extremely intense and powerful laser ...

A spacecraft that never runs out of fuel sounds like science fiction, but a team at Texas A&M University has taken a small, literal step toward that goal. In experiments conducted at the university’s ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Researchers have developed a method that could one day be used to build ...

Add Yahoo as a preferred source to see more of our stories on Google. In a discovery that could reshape how we view and understand the human brain, researchers have successfully passed a laser beam ...

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In the summer of 1960, physicist Theodore H. Maiman conducted a laboratory experiment at Hughes Research Laboratories that produced the first laser beam. Using a high-energy flashlamp and a small ...

Researchers set a record by guiding light in 45-meter-long air wave-guides. It's not at every university that laser pulses powerful enough to burn paper and skin are sent blazing down a hallway. But ...