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 ...

Nowadays, the dark of night is interspersed with the light of stars. But before the stars were born, did light shine at the ...

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 ...

In a new study, scientists discovered the fastest of these stars, S4714, which orbits around Sgr A* at more than 8% of light speed, or 15,000 miles per second (24,000 km/second), faster than any ...

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.

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 ...

Young star cluster R136 is a stellar nursery full of stars but over the ... These objects were thrown out at a speed of 100,000 ... Some of these objects traveled up to 1,000 light-years from ...

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 ...

When a star is torn apart by a black hole’s gravitational tidal forces, it’s known as a tidal disruption event. Astronomers have observed such violent events before, but AT 2022cmc is brighter ...