The image of supermassive black hole Sagittarius A * was created using data from the Event Horizon Telescope Collaboration.

The NSF NOIRLab-operated Gemini North telescope captured stunning imagery of galaxies UGC 12914 and UGC 12915, aka 'Taffy Galaxies.' Their 'twisted appearance is the result of a head-on collision' ...

A recently discovered observatory may be the oldest in the Americas, challenging everything we knew about ancient astronomy.

The interstellar comet 3I/ATLAS is racing away from the sun. Hubble and JWST track the object's strange composition: high CO2 ...

The 13th day of the 18th annual Space Telescope Advent Calendar features part of a dense cluster of galaxies—a wide variety ...

An interstellar comet racing through the inner solar system is giving scientists a rare chemical snapshot of material formed around another star, with early findings showing an unexpectedly low water ...

Study using radio telescope data finds most geostationary satellites emit little unintended radio interference in frequencies used for astronomy ...

Interstellar comet 3I/ATLAS is turning green and getting brighter as it nears Earth. Scientists track the ancient space rock, watching for a dramatic, last-minute outburst.

You can tune in to see live views of the Geminid meteor shower as it peaks overnight on Dec. 13-14, thanks to a free ...

An exponential increase in the number of satellites placed in low-Earth orbit has brought advances in telecommunications ...

Up to 150 Geminid meteors may brighten the night sky each hour as the shower hits its peak on Dec. 13-14, according to the ...

A NASA spacecraft is making a close approach to the sun, repeating its record-breaking distance of 3.8 million miles from the ...