People near Jiangxi and Foshan, two cities you've probably never heard of in China, got a glimpse of what might be Bowser's sky castle in Mario Bros, or an alien megastructure, or the Matrix parallel universe. Since Laurence Fishburne and Keanu Reeves were not reported at the scene, that's last one's out. But something weird was up.
Hundreds of witnesses saw an apparition that looked just like a floating city appear in the sky earlier this month. As is customary, the Internet freaked out. However, scientists just answered all of this in a completely reasonable way that should calm everyone down, but won't.