For 35 years, the Hubble Space Telescope has taken photos of celestial objects across the universe. Look back at 10 photos ...

The Hubble Space Telescope "opened a new window to the universe" when it launched into space. Now, 35 years later, NASA is ...

Using data from space telescopes and other instruments, astronomers, cosmologists, and astrophysicists are able to deduce and ...

as well as how much dark matter—and how fast the universe is expanding. It also significantly strengthens researchers' confidence that they understand the theory behind what's being observed. The new ...

Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.

In simplest terms, the rate at which the universe expands on paper doesn’t match actual astronomical observations. That speed ...

The school-bus-sized observatory launched on April 24, 1990 and overcame early setbacks to become one of the most ...

In celebration of 35 years spent in orbit around Earth, the Hubble team has released a set of four new images showing the ...

A slowly spinning universe could resolve a puzzle in physics known as the Hubble tension, a new model suggests.

Physicist Richard Lieu first explored the idea that gravity could exist without mass—now he’s got a new cosmological model ...

To mark 35 years in Earth’s orbit, NASA is releasing breathtaking images captured by the Hubble Space Telescope, showcasing ...

Then, by comparing that distance to how fast the galaxy is moving away, they get the expansion rate for that part of the universe. This gives a value of around 73 kilometers per second per megaparsec.