Recent research has unveiled a troubling and persistent mystery at the heart of modern cosmology: the universe is expanding ...

The James Webb Space Telescope has captured a mid-infrared picture of Sagittarius A*, filling in a long-standing gap in ...

Our sun is a lonely star. At least half the stars in our galaxy have binary companions. This was nicely illustrated in the ...

Andromeda is the closest large galaxy to the Milky Way. And it is getting closer, as the two will merge in several billion ...

Astronomers are celebrating the completion of a 2.5-billion-pixel panoramic picture of the entire Andromeda Galaxy. The team includes several UC Santa Cruz researchers who made significant ...

The James Webb Space Telescope has spotted one of the earliest and most distant supernovas, marking the death of a stellar ...

This NASA/ESA Hubble Space Telescope image peers into the dusty recesses of the nearest massive star-forming region to Earth, ...

A little-known chapter of the Hubble Space Telescope’s history is a reminder of the risks of looking at the sun ...

That Rich was presenting the story of Edwin Hubble at the January 2025 AAS meeting was symbolic, for it was at the 33rd ...

The Andromeda galaxy is a colossal marvel in our sky, hosting over 1 trillion stars. Now, astronomers have used the Hubble ...

Jupiter's Great Red Spot storm, which usually appears dark-red, can be seen shining a lurid blue color in an ultraviolet ...

For humans, the most important star in the universe is our Sun. The second-most important star is nestled inside the ...