Recent progress photos of the European Southern Observatory's (ESO) Extremely Large Telescope (ELT) reveal its dome, central structure and base of the M1 mirror are taking shape. . | Credit ...

The Extremely Large Telescope is currently under construction ... central structure and base of the M1 mirror — one of five mirrors that will work together to observe the cosmos.

The mighty telescope is expected to see its "first light" by 2028, with the goal of observing terrestrial exoplanets and their atmospheres, as well as measuring the expansion of the universe. New ...