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Jupiter's Lightning May Have the Force of Nuclear Weapons

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1 month 3 weeks ago
How powerful is Jupiter's lightning? Thick clouds cover the view, notes Science magazine. But using an instrument on NASA's Juno spacecraft (orbiting Jupiter for the past decade), researchers determined Jupiter's lightning bolts are 100 to 10,000 times more energetic than earth's: A single bolt of lightning on Earth releases about 1 billion joules of energy. That means the most extreme bolts of jovian lightning carry 10 trillion joules of energy, equivalent to 2400 tons of TNT, or one-sixth the power of the atomic bomb dropped on Hiroshima, Japan. Based on the rates of flashes seen by Juno, storms on this tempestuous world can unleash the force of multiple nuclear weapons every minute... The four storms Juno studied were monstrous, says Michael Wong, a planetary scientist at the University of California, Berkeley and one of the study's authors. There were three flashes per second on average, often emerging from the hearts of storms that are 3000 kilometers across, longer than the distance from New York City to Denver. The researchers used the Hubble Space Telescope (and photographs from Juno's camera) to track Jupiter's storms with such precision that their radiometer could then pick out individual lightning flashes, according to the article. "It's just a massive ball of gas. It makes sense that there's very energetic lightning happening," says Daniel Mitchard, a lightning physicist at Cardiff University who wasn't involved with the new study. But confirming such suspicions "is exciting," he says, because lightning plays an important role in forging complex chemistry — including the sort that primordial life is built on. Thanks to Slashdot reader sciencehabit for sharing the article.

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