Extremely Large Telescope

The Las Campanas Observatory, where the Magellan telescope is under construction.Photo: Martin BERNETTI / AFP (Getty Images)When finished, the Giant Magellan Telescope will peer at the cosmos from a perch in Chile’s Atacama Desert, a…

Astronomers studying Neptune’s atmosphere found that the planet’s global temperature has dropped over a 17-year period, while its south pole has warmed considerably.The temperature changes were captured in nearly 100 thermal-infrared…