Armed with the world's largest digital camera, the Vera C. Rubin Observatory in Chile will take night-sky images that revolutionize astronomy.

Imagine a space telescope with a mirror stretching 50 meters across! That's larger than the width of a U.K. soccer field and ...

The European Southern Observatory's Very Large Telescope (ESO-VLT) has captured clear images of 3I/ATLAS, a fast-moving interstellar comet that the Sun's gravity can't slow down.

New observations show a star that blew up in two separate bursts, confirming a long-suspected cosmic phenomenon called a ...

High in the Andes Mountains of northern Chile, something extraordinary is happening. Perched on the peak of Cerro Pachón at ...

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...