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.

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

The Extremely Large Telescope is set to be even more powerful than its predecessor, the Very Large Telescope. Like the Very Large Telescope, the new telescope is an optical reflecting telescope ...

The first stone for the Extremely Large Telescope (ELT) was laid during an opening ceremony last week in Chile. Its name isn’t pure hyperbole — the ELT will boast a main mirror measuring 128 ...

Construction on ESO's Extremely Large Telescope continues. Here, in this May 1, 2025 photo taken from directly above, the the hexagonal support structure that will hold the ELT's 128-foot (39 ...

The Very Large Telescope is situated atop Cerro Paranal, an 8,645-foot-high (2,635 m) mountain in Chile's Atacama Desert, about 75 miles (120 km) south of the port city of Antofagasta.

This simple animation shows you just how immense the European Extremely Large Telescope is going to be compared to the Pyramids of Giza, the Colosseum in Rome, and the Statue of Liberty. It’s ...

The telescope features a novel, innovative design, based on 5 mirrors. The primary 42-m mirror is composed of 906 segments, each 1.45 m wide, while the secondary mirror is as large as 6 m in diameter.

The new European Extremely Large Telescope (E-ELT) will have a main mirror that is 39 meters in diameter, with a a total light collecting area of 978 square meters -- that's about 10,500 square ...

The Extremely Large Telescope or ELT will be the most powerful optical telescope ever built. When it opens for business in 2028, it promises to reshape our view of the cosmos.