Auroras on Jupiter’s giant moon Ganymede look like Earth’s northern lights, NASA spacecraft reveals

A composite image of Ganymede’s aurora showcases the ultraviolet data gleaned by NASA’s Juno spacecraft. (Image credit: NASA/JPL-Caltech/SwRI/UVS/ULiège/Gusbin/Bonfond) A fleeting flyby of Ganymede has revealed that its shimmering auroras may behave far more like Earth’s than scientists expected. During a close pass on July 7, 2021, NASA’s Juno spacecraft captured the most detailed ultraviolet viewsContinue Reading

‘Truly extraordinary’: Mega-laser shooting at us from halfway across the universe is the brightest ‘cosmic beacon’ we’ve ever seen

Researchers have detected a powerful beam of microwaves, or megamaser, coming from a distant galaxy merger around 8 billion light-years from Earth. The rare signal was only detected thanks to a phenomenon known as gravitational lensing, which magnified the incoming radiation. (Image credit: Inter-University Institute for Data-Intensive Astronomy (IDIA)) Astronomers have discovered a supercharged spaceContinue Reading