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Originally Posted by oil pan 4
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In the Dallas/Ft Worth area,Sundays @ 6:00 PM,Fox Network has been broadcasting a National Geographic program entitled,'One Strange Rock,' hosted by Will Smith.
A number of American astronauts,who spent time on the International Space Station and Space Shuttle are featured regularly in the program.
They've mentioned that since the solar wind travels slower than light,when NASA observes solar/cosmic ray activity,they can warn the space station crew to move to locations within the station,which will afford the most protection from incoming cosmic radiation.
They didn't speak to intersteller cosmic radiation per se.
They also implied that humans are an evolutionary consequence of genetic mutations caused by cosmic rays,and that future astronauts traveling to the Moon colonies and Martian colonies,will structurally,no longer be Earthlings,after prolonged exposure to cosmic radiation,since spaceships,Moon, and Mars do not provide a magnetospheric shield to the high-energy particles.
During sleep,cosmic rays striking an astronaut's optic nerve create a perceived flash,akin to a lightning strike,reminding them that they're being bombarded,and at a greater risk of cancer.
Earth is supposed to be heading towards another magnetic pole,polarity reversal,and during the reversal,there will be a time when Earth will essentially have no magnetosphere to deflect cosmic radiation.
Earth's paleomagnetic history records past reversals which were accompanied by climate events and faunal extinctions.
Buckle Up!
