Space/Science — HabitableZone

Space/Science » in reply to Basic Space Fact - Mass Protects Against Radiation Better Than Magnetospheres

Water Protects Against Radiation, if you're under a lot of it
E.P. Grondine — (archived)

"Thats especially true of water for solar flare type radiation which our magnetosphere does stop."

In other words, our magnetosphere stops solar flare radiation, and so can water.

"Our atmosphere stops cosmic rays not the magnetosphere and it only takes 15 lbs/in2 of rock or water to have the same mass equivalent."

"only" fifteen pounds per square inch - and no mention of solar flare type radiation being stopped by gas - or hot air

Your radiation arguments are kind of like your delta v arguments for manned Mars flight, Mark: they ignore how much mass has to undergo the delta v.

You also have failed to mention UV, which our ozone stops.

I think that gravitational forces from a nearby massive moon prevent the establishment of regular convective currents for core cooling, but perhaps its
compressional heat that's added - or maybe the Earth's core will cool someday and everything on the face of the planet will die, just as it has on Mars...

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