Scientists pushed photons across the universe to test the speed of light—and found Einstein’s cosmic speed limit still holds ...

The surprising detection of light 200 times more powerful than previous observations from the nearby pulsar Vela indicates hidden physics around dead stars. When you purchase through links on our site ...

The speed of light has been one of science’s most trusted markers of stability. For more than a century, the idea that light moves through space at a constant speed has supported some of physics’ most ...

Space — the final frontier. These are the words that introduce every episode of classic "Star Trek," the show that essentially popularized the concept of traveling the stars at the speed of light – or ...

Light does a lot of work in the modern world, enabling all types of information technology, from TVs to satellites to ...

For the first time, physicists have simulated what objects moving near the speed of light would look like — an optical illusion called the Terrell-Penrose effect. When you purchase through links on ...

Physics is the study of the underlying laws and mechanisms explaining how the universe works. Most of what we do in daily life is based on a principle or law of physics—dealing with forces, motion, ...

The aurora borealis is usually visible only way up north, but over the past 18 months, shimmering curtains of pink and green light have filled night skies across much of North America, at times ...