Scientists Recreated Volcanic Lightning by Blasting Ash Out of a Cannon

There is nothing on Earth quite like volcanic lightning. Witnessing chaotic towers of tumbling ash emerge from an explosive convulsion at the apex of a mountain is already jaw-dropping enough. The emergence of purplish daggers of light shooting out from that column, however, elevates it to something more otherworldly.

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from Gizmodo https://ift.tt/2Y0mSTR

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