The Bastille Day Event

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Some interesting solar physics here.

Spaceweather.com

July 14, 2022: When a solar storm is so strong that the Voyager spacecraft feel it at the edge of the solar system, you know it must be special. Twenty-two years ago today, July 14, 2000, the lonely travelers were on the verge of escaping space weather altogether when giant sunspot AR9077 exploded. The flare was so intense, it sent shockwaves to the very edge of the solar system.

SOHO images of the Bastille Day solar flare (left) and CME (right). The onset of snow in the images is a result of energetic protons hitting the spacecraft

Earth was on the doorstep of the blast, dubbed The “Bastille Day Event” because it coincided with the national day of France. Subatomic particles, especially protons, arrived in a ferocious wave, peppering satellites and penetrating deep into Earth’s atmosphere. Sensors on Earth’s surface registered a rare GLE–a “ground-level event.”

“People flying in commercial…

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July 14, 2022 at 04:43AM

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