Every night, the Gemini cloudcam atop Mauna Kea in Hawaii monitor storms approaching some of the world's largest telescopes. It often captures bright bolts of lightning lancing down to the ground below the towering dormant volcano. On July 24th it captured something lancing up:

By spaceweather.com 7-26-17

"This amazing lightning-like phenomenon is known as a Gigantic Jet," says Frankie Lucena of Puerto Rico, who processed the video. "They are related to sprites, but more powerful and easier to see with the naked eye."
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