
The Extremely Large Telescope (ELT), under construction by the European Southern Observatory, dots the horizon in the Atacama Desert, Chile, Tuesday, April 14, 2026. (AP Photo/Esteban Felix)

The Extremely Large Telescope (ELT), under construction by the European Southern Observatory, dots the horizon in the Atacama Desert, Chile, Tuesday, April 14, 2026. (AP Photo/Esteban Felix)