but some lightning goes upward, forming blue jets and gigantic jets. Perhaps the most dangerous lightning appears as "bolts from the blue" -- lightning that begins upward, but then moves sideways ...

“According to the researchers, this is the first time they’ve ever seen this blue lightning shoot up like that,” Mogensen said. The video also shows a spidery tangle of red sprites flashing ...

In a stormy Hawaiian sky in July 2017, streaks of red and blue lightning seemed to meet above a bed of white light. Cameras on the Gemini North telescope at the Gemini Observatory in Mauna Kea ...