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

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