Astronomers analyzing archival images from JWST have discovered an unexpectedly vast population of the smallest asteroids ...

The Hubble constant is still a mystery because measurements from telescopes in today’s universe give higher numbers than ...

Astronomers have long understood that the universe is expanding—in other words, the space in between cosmic objects that aren ...

The rate of expansion of the universe today is a figure known as the Hubble constant, which is typically measured in units of ...

"The discrepancy between the observed expansion rate of the universe and the predictions of the standard model suggests that ...

New observations of TRAPPIST-1b using the James Webb Space Telescope have provided detailed insights into the potential ...

By reverse-engineering James Webb Space Telescope (JWST) exoplanet data, a team of astronomers just spotted dozens of tiny ...

The James Webb telescope spent another year collecting instantly iconic space imagery. Here are some of our favorites.

The James Webb Space Telescope has spotted five galaxy candidates dating to just 200 million years after the Big Bang, making ...

Mowla, who spotted the galaxy in Webb’s image, was drawn to its gleaming star clusters, because objects that sparkle ...

This mid-infrared image of colliding galaxies IC 2163 and NGC 2207 from the James Webb Space Telescope shows two large, ...

The findings offer a crucial cross-check for previous Hubble Space Telescope measurements of the universe's mysterious ...