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 ...

The disrupted stars are then spread into a stream of gas long before they can get close enough to the black hole’s horizon to reach the speed of light, as shown in the Ph.D. thesis of my former ...

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.

In the "Star Trek" TV shows and films, the U.S.S. Enterprise's warp engine allows the ship to move faster than light, an ability that is, as Spock would say, "highly illogical." However, there's a ...

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 ...

Two neutron stars colliding (artistic impression) Despite being found to have not traveled seven times faster than the speed of light, follow-up observations led researchers to discover that the ...

That can't be right. Speed Demon. Back in 2017, scientists observed a spectacular collision of two neutron stars that blasted a jet of radiation so powerful that NASA says the energy it released ...

A jet of material released by the neutron star collision GW170817 is traveling at 99.97 percent of the speed of light and manages to appear as if it is breaking the laws of physics by traveling ...