On human timescales, the universe may as well be eternal. It’ll be here long after our species and our planet are gone, but ...

A discovery of binary stars could be the first step in building a more complete picture of how our galaxy formed, according ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of light is incredibly fast to us ...

Evolving dark matter may explain cosmic acceleration. Observations support a mixed model. For years, a stubborn puzzle has sat at the center of the standard cosmological model. The evidence clearly ...

According to data from the Hubble and James Webb Space Telescopes, the origins of the free-flying photons in the early cosmic ...

The Hubble Space Telescope, a cornerstone of modern astronomy, has been providing breathtaking images and invaluable data for ...

If ultimately true, the universe will reach its maximum size around 11 billion years from now. At that point, physics (and ...

Einstein expressed support for Hubble’s observations that the universe was expanding—an idea the famed physicist had previously rejected. Alamy/PictureLux / The Hollywood Archive On a snowy New Year’s ...

Floating high above Earth's atmosphere, the Hubble Space Telescope has captured some of the most breathtaking images ever ...

If there is an absolute law in the universe, it’s that nothing can travel faster than the speed of light. Space is big, and ...

A new collage from the James Webb Space Telescope reveals eight dazzling examples of gravitational lensing.