Light from baby galaxies captured for the first time. It turned out to be many times more powerful than thought: ultraviolet pierced the fog of the young Universe, kicking off its transformation from dark and cold to transparent and hot. Now it's clear: the first stars were true giants.
🎯 The most energetic photons had energies above 24.6 electron volts—enough to strip electrons even from helium. Previously, this was thought to have happened much later.
🎬 In the series "Firefly," the ship "Serenity" flies through worlds aglow with the light of many suns. Astronomers, however, have captured that ancient light that ignited those suns.