Determining the expansion rate of the universe, the "Hubble constant," shapes our understanding of the cosmos, its age, and its fate.

Brian Greene (Cosmic String Theory) and Astrophysicist Ethan Siegel have collaborated on a National Geographic coffee-table ...

In a remarkable discovery, researchers have confirmed the existence of the "Einstein zig-zag," a rare cosmic phenomenon linked to gravitational lensing.

The cosmos continually surprises astronomers with phenomena that defy expectations. One such discovery, dubbed the “Einstein ...

The James Webb Space Telescope may have discovered the earliest galaxies ever observed, seen just 200 million years after the ...

The Sombrero galaxy, named for its resemblance to the Mexican hat, is about 30 million light-years from Earth.

Webb's ability to see through hazy obstacles is demonstrated here with the Sombrero, aka Messier 104, a nearly edge-on spiral ...

Albert Einstein’s prediction about how gravity behaves has been tested on a cosmic scale. Albert Einstein’s prediction about ...

The James Webb Space Telescope may have broken another of its own records, finding potentially five of the earliest and most ...

The James Webb Space Telescope's brand-new image of the Sombrero Galaxy casts this city of stars in a new light — ...

When Albert Einstein introduced his theory of general relativity in 1915, it changed the way we viewed the universe. His ...

The James Webb Space Telescope has identified the first-ever "Einstein zig-zag," a distant quasar lensed six times by two ...