A photon emitted from a star a billion light-years away arrives at a telescope having experienced no time whatsoever. Not ...

Scientists experimentally confirmed what we’ve known to be true for half a century—darkness can “travel” faster than light.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. It’s becoming increasingly difficult to see stars in the ...

People are buying helmets, face masks, vests and beds that emit long-wavelength light. Beneath the hype, there is some ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

Blue light is all around you. These high-energy light waves emanate from the sun, stream through earth’s atmosphere, and interact with light sensors in your skin and eyes. Increasingly, people are ...