Spacewalking astronauts repaired and upgraded the famed Hubble Telescope during five missions from 1993 to 2009. Here's a ...

Webb has two decades ahead of it, but it's already captured some stunning images. Here are 35 of our favorites.

Roughly 100 years ago, American astronomer Edwin Hubble discovered that “spiral nebulae” were actually independent galaxies, located millions of light years away from us. He also figured out that ...

A new University of Kansas survey of distant galaxies using the James Webb Space Telescope reveals never-before-seen star ...

Astronomers have confirmed a wandering black hole, about seven times the mass of the Sun, 5,000 light-years from Earth.

A bold new theory suggests the universe didn’t begin with a single Big Bang, but instead unfolds through a series of ultra-fast, invisible bursts called “temporal singularities.” These fleeting events ...

ESA/Hubble celebrates 35 years with a stunning new image of the Eagle Nebula — a massive cosmic spire sculpted by star ...

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

Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth with an equatorial diameter of 88,846 ...