A new analysis from NASA using the Hubble Space Telescope shows that the Crab Nebula, the remnant of a supernova recorded in 1054, is still rapidly expanding, offering rare, direct evidence that the ...

NASA’s Hubble Space Telescope has captured the Crab Nebula’s expansion across a quarter century, comparing observations taken in 1999 with fresh data gathered using an upgraded camera. The resulting ...

A major survey verifies 3,500 gravitational lenses, offering new tools to map dark matter and track cosmic expansion.

Add Yahoo as a preferred source to see more of our stories on Google. A new “stochastic siren” method uses the gravitational-wave background to sharpen estimates of the Hubble constant. (CREDIT: NASA) ...

Primordial magnetic fields may help explain why measurements of the universe’s expansion do not agree. Scientists have long known that the universe is expanding, yet there is still no agreement on how ...

The Crab Nebula has evolved as seen in a stunning 2024 cosmic display captured by NASA’s Hubble Space Telescope.

A burst of light in the deep sky is doing something it should not be able to do. It looks like one supernova, but it shows up as several copies at once, scattered around two foreground galaxies. The ...

A team of cosmologists in China has introduced a mathematical framework that investigates two of the deepest mysteries in ...

Netchitailo, V. (2026) Hubble Tension: Evidence for Patchwork Quilt Structure of Visible World in World-Universe Cosmology.

To turn that distance into a Hubble constant, you also need the event’s redshift, which is tied to how fast the source is receding due to cosmic expansion. Standard approaches get the redshift by ...