Cosmic Rays and the Weakening Solar Cycle

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Which brings us back to the old conundrum: do cosmic rays affect the Earth’s weather / climate, and if so, how and how much?

Spaceweather.com

August 11, 2020: Cosmic rays are bad–and they’re probably going to get worse.

That’s the conclusion of a new study entitled “Galactic Cosmic Radiation in Interplanetary Space Through a Modern Secular Minimum” just published in the journal Space Weather.

“During the next solar cycle, we could see cosmic ray dose rates increase by as much as 75%,” says lead author Fatemeh Rahmanifard of the University of New Hampshire’s Space Science Center. “This will limit the amount of time astronauts can work safely in interplanetary space.”

spacewalk

Cosmic rays are the bane of astronauts. They come from deep space, energetic particles hurled in all directions by supernova explosions and other violent events. No amount of spacecraft shielding can stop the most energetic particles, leaving astronauts exposed whenever they leave the Earth-Moon system.

Back in the 1990s, astronauts could travel through space for as much as 1000 days before they…

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August 12, 2020 at 11:15AM

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