以下来自Spaceweather
You know a solar flare is strong when even the Voyager spacecraft feel it. Twenty-two years ago today (July 14, 2000) the sun exploded with so much force, it sent shockwaves to the edge of the solar system.
Earth was on the doorstep of the blast, nicknamed the "Bastille Day Event" because it happened on the national day of France. Subatomic particles accelerated by the flare peppered satellites and penetrated deep into Earth's atmosphere. Radiation sensors on Earth's surface registered a rare GLE--a "ground-level event."
You know a solar flare is strong when even the Voyager spacecraft feel it. Twenty-two years ago today (July 14, 2000) the sun exploded with so much force, it sent shockwaves to the edge of the solar system.
Earth was on the doorstep of the blast, nicknamed the "Bastille Day Event" because it happened on the national day of France. Subatomic particles accelerated by the flare peppered satellites and penetrated deep into Earth's atmosphere. Radiation sensors on Earth's surface registered a rare GLE--a "ground-level event."