Summary:
- The Extremely Large Telescope (ELT) is a giant new telescope being built in Chile that will be the largest optical/infrared telescope in the world.
- The ELT will have a primary mirror that is 39 meters wide, allowing it to collect more light and see fainter and more distant objects in the universe.
- The ELT will help astronomers study the early universe, search for exoplanets, and learn more about the nature of dark matter and dark energy.