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Why doesn't Venus have auroras?

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Auroras happen when charged particles slam into the atmosphere. On Earth, those charged particles come from the solar wind, and the Earth’s magnetosphere draws them away from equatorial regions but pulls them into polar regions. Since Venus doesn’t have a magnetosphere, the entire planet is hit by charged particles pretty evenly. read more

The same magnetic phenomenon that causes auroras on Earth has now surprisingly been discovered creating giant magnetic bubbles around Venus, a planet without a magnetic field. These findings could help explain mysterious flashes of light from Venus, in addition to the way comet tails work, researchers say. read more

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