High up in the Chilean Andes, the Extremely Large Telescope (ELT) is set to become the world's largest optical telescope and ...

Discovered on July 1 by the NASA-funded ATLAS telescope in Chile, 3I/ATLAS is only the third confirmed visitor from another ...

A faint, ancient flash of light detected by the James Webb Space Telescope (JWST) has broken the record for the most distant ...

If you feel a thrill every time we discover something new about the cosmos, then November 25th may have been a noteworthy day ...

Still, science being science, we needed proof—and we got it in 1992, when two astronomers found two planets orbiting a pulsar ...

Researchers have discovered a large, orderly spiral galaxy that formed soon after the Big Bang, when space was only about 1.5 ...

New 3I/ATLAS images from NASA and the ESA suggest the interstellar comet is active as it approaches Earth in December.

Astronomers have long been concerned about reflections from satellites showing up in images taken by telescopes and other ...

Proliferating satellites are beginning to harm the science work of the beloved Hubble Space Telescope and other observatories ...

A telescope in Chile has captured a stunning new image of the Butterfly Nebula, a grand and graceful cosmic wonder.

Light from the half a million satellites that humanity is planning to launch into Earth's orbit in the coming years could ...

Galaxy mergers activate supermassive black holes, Euclid data shows, revealing more AGN in merging systems and new insights into galaxy evolution ...