The Atacama Cosmology Telescope in Chile has released its final batch of data after 15 years — and it proves that the Hubble ...

This NASA/ESA Hubble Space Telescope image features a glittering blue dwarf galaxy called Markarian 178 (Mrk 178). The galaxy ...

NASA's Hubble Space Telescope captured an uncommon sight—the death of a low-mass star—in this image of the Calabash Nebula ...

The 15th day of the 18th annual Space Telescope Advent Calendar shows a colorful view of a dense cloud of gas and dust, ...

Discovered over the summer, the comet known as 3I/Atlas will pass within 167 million miles of our planet on Friday. That's as ...

A stray comet from another star is swinging past Earth. Discovered over the summer, the comet known as 3I/Atlas will pass ...

In the spirit of the season, the interstellar comet 3I/ATLAS is changing color as it leaves the sun behind — shifting from a ...

The Hubble Space Telescope has captured an amazing view of galaxies LEDA 48062 and UGC 8603. Credit: ESA/Hubble & NASA, R.

Wondering what 3I ATLAS is all about? Here's what to know as interstellar comet 3I/ATLAS nears Earth this week, when to watch ...

Over a month after its perihelion, or closest pass of the Sun, observations still clearly show 3I/ATLAS' "anti-tail." ...

In a remarkable astronomical event, scientists recently detected the longest gamma-ray burst (GRB) ever recorded, an explosion that lasted an astonishing seven hours. This unprece ...