A mystery interstellar object spotted last week by astronomers could be the oldest comet ever seen, according to scientists.

The under construction ESO Extremely Large Telescope in Chile was captured in 2025 and 2023 with the sun rising behind it.

The European Southern Observatory has captured the clearest images yet of the interstellar visitor 3I/ATLAS as it moves ...

On Earth, water is so intertwined with life that our search for life on other worlds is essentially a search for water. When ...

The space-based observatory has revolutionized the way we see space, and it can now add another remarkable accomplishment to ...

Here's everything you need to know about the Extremely Large Telescope, which will become the largest telescope in the world when it is completed at the end of the decade.

When it was completed in 1998, the Very Large Telescope was the biggest telescope in the Southern Hemisphere.

High in the Chilean desert, the Extremely Large Telescope is taking shape. It promises sharper views of space than we've ever seen — but will Australian astronomers be able to use it?

ESO's Extremely Large Telescope at Cerro Armazones in Chile's Atacama Desert is seen from directly above while its construction continues.

The so-called "Extremely Large Telescope" is being built on a mountaintop in the Andes at an elevation of about 3,000 meters. And it really is extremely large.

The plains house the aptly named Very Large Array (VLA)—a radio telescope made of 27 different antennas, each of which looks like a home satellite dish on steroids. When the antennas are pointed ...

The Vera C. Rubin Observatory's primary mirror is 8.4 meters in diameter, which makes it one of the largest optical telescopes in the world. However, the real secret sauce of the telescope is its ...