Atop Cerro Armazones in Chile, a significant project is in the works: the Extremely Large Telescope (ELT). Once completed, it will be the world’s largest telescope with a primary mirror spanning 128 feet (39 meters).
Astronomy relies heavily on location. To view the faintest and most distant objects in the universe, telescopes need dark, stable skies. The Chilean Atacama Desert, especially Cerro Armazones, is one of the best places on Earth for this. High altitudes, dry air, and isolated locations allow for exceptional nighttime clarity.
Chile has been a hub for ground-based astronomy for over 60 years. The European Southern Observatory (ESO) operates multiple observatories here, including the Very Large Telescope (VLT) at Cerro Paranal. These facilities are pivotal in mankind’s quest to understand not just nearby exoplanets but also the early galaxies that formed after the Big Bang.
The ELT will revolutionize scientific discovery. Its powerful mirror and cutting-edge technology will enable astronomers to directly photograph exoplanets, study their atmospheres, and investigate the nature of dark matter and dark energy. A recent study from ESO notes that up to 80% of astronomers believe investments in big telescopes like the ELT are essential for future discoveries in cosmology.
Interestingly, user reactions on social media have been enthusiastic, with many people expressing excitement about what the ELT’s advanced capabilities could mean for our understanding of the universe. The continuity from the VLT to the ELT marks a significant progression in technology, showcasing humanity’s relentless pursuit of knowledge.
Learn more about the Extremely Large Telescope and how it’s set to transform our view of the cosmos.

