Meet comet 3I/Atlas. A collision with this rock would release the same kind of energy that a certain other asteroid did 66 ...

Physicists tested light speed using cosmic gamma-ray bursts. Study confirms Einstein's prediction that all light colors travel at same speed.

We throw around terms like “light year” and “faster than light travel” frequently. But to really understand the scale it helps to feel how fast the speed of light is. The flight simulation video below ...

Picture yourself standing at the Geographic North Pole with a compass in your hand. You'd expect that trusty needle to point ...

They recreate how a camera would see objects traveling at 99.9% of the speed of light, revealing surprising relativistic ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Over the last couple of years, time has felt more nebulous than ever. You'd be forgiven for thinking that days are passing by at an increasingly faster clip. According to scientists, that perspective ...

A large "potentially hazardous asteroid" is expected to swing fewer than six lunar distances from Earth at the beginning of next month. The asteroid, known as 2022 RM4, is expected to pass by Earth on ...

Earth's core is cooling at rates faster than previously thought, which could speed the planet's inevitable march toward uninhabitability millions or billions of years from now, researchers said this ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. The Earth in orbit around the Sun, with its rotational axis shown.

DETROIT — The days are indeed getting shorter. Earth had its shortest day ever recorded on June 29, with the day ending 1.59 milliseconds sooner than usual, according to the National Physical ...

Does it ever feel like time is just slipping away? Well, this year, it kind of did by at least a whopping 1.6 milliseconds. On June 29, 2022, the Earth spun just a little bit faster than normal, ...