It's a reminder of why preserving pristine night skies remains essential for both astronomy and human wonder.

For better images, the European Southern Observatory can combine four optical telescopes. Now, thanks to laser technology, a ...

A journey across 440 light-years to the young star HD 135344B surrounded by a dust ring featuring the tell-tale fingerprint ...

Recently discovered interstellar comet 3I/ATLAS have been captured using the European Southern Observatory's Very Large ...

ESO's original GRAVITY interferometer had operated since 2016, incorporating a cryogenically cooled Beam Combining Instrument ...

Last week, four lasers were projected into the skies above the European Southern Observatory’s (ESO’s) Paranal site in Chile.

CAPE CANAVERAL, Fla. (AP) — Astronomers have revealed a nearby spiral galaxy in all its brilliant glory, shining in thousands of colors. The dazzling panoramic shot released Wednesday of the Sculptor ...

Staff at the European Southern Observatory have a system to clean the La Silla Observatory's delicate mirrors without breaking them. Big telescopes feature some of the finest and most precise mirrors ...