Because of this universal speed limit, telescopes are essentially time machines.When astronomers look at a star 500 light-years away, they're looking at light from 500 years ago. Light from around ...

The suggestion that the speed of light can change is based on data collected by UNSW astronomer John Webb, who posed a conundrum when he found that light from a distant quasar, a star-like object ...

The idea that stars live in galaxies has been astronomy’s conventional wisdom since the 1920’s. It took a serious hit recently, though, when observers concluded that as many as half the stars ...

That’s very close to the speed of light, but not quite faster than it. Indeed, to our knowledge so far, nothing on or off our planet can travel faster than the speed of light.

Light travels at a constant speed of 670,616,629 mph which means that light covers a speed of 670 million miles in an hour. Light travels a distance of 5.88 trillion miles in one Earth year ...

The brightest star in our skies is the "dog star", Sirius (pronounced Sea' ree us).It's the primary star in the constellation of the big dog, Canis Major. Sirius is roughly 9 light years away.

A jet of radiation from two colliding neutron stars appears to be travelling at seven times the speed of light, according to measurements from the Hubble Space Telescope. Although this is merely ...

Back in October 2018, astronomers spotted the bright flare of a star being shredded by a black hole 20 million times more massive than our Sun 665 million light years away—a so-called "tidal ...

At 1 percent the speed of light, it would take a little over a second to get from Los Angeles to New York. This is more than 10,000 times faster than a commercial jet.

“Scotty, I need warp speed in three minutes or we’re all dead,” Captain James T. Kirk firmly tells his lieutenant commander in Star Trek II: The Wrath of Khan (1982). Unfortunately, warp ...