Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: neilep on 12/11/2007 18:54:00

Title: Good Old Magentosphere !!..but how long has it protected us ?
Post by: neilep on 12/11/2007 18:54:00
Dearest Magnetic Personality Owners...ewe all know how attractive ewe are !!

See this picture of our Earth ?

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Nice isn't it ?..Notice how busy the magnetosphere is being busy protecting us from the Suns nasty rays......?...good old magnetopshere that's what I say !!

What I want to know is...how long after the formation of the Earth did the Magnetosphere kick in ?....Did it have to reach a particular strenghty before life could start living ?

Ewe're charismatic and ewe know it !! [;)]

Title: Good Old Magentosphere !!..but how long has it protected us ?
Post by: Soul Surfer on 12/11/2007 21:49:49
We may have to do without it for a while pretty soon because it's well overdue for a field reversal and the field strength has been falling steadily for ages so we might find out the hard way!
Title: Good Old Magentosphere !!..but how long has it protected us ?
Post by: neilep on 13/11/2007 00:24:55
I'm just glad I didn't pursue a career in Compass manufacture !
Title: Good Old Magentosphere !!..but how long has it protected us ?
Post by: ukmicky on 13/11/2007 19:00:54
I'm just glad I didn't pursue a career in Compass manufacture !
Slightly off topic
The field strength is decreasing and comic rays /and bombardment from the sun creates carbon 14 ,which then reacts with oxygen and creates C02 so could that be part of the reason why the C02 content of our atmosphere has gone up.
Title: Good Old Magentosphere !!..but how long has it protected us ?
Post by: paul.fr on 13/11/2007 19:09:49

Slightly off topic
The field strength is decreasing and comic rays /and bombardment from the sun.....
are these the same as cosmic rays, just less serious?
Title: Good Old Magentosphere !!..but how long has it protected us ?
Post by: ukmicky on 13/11/2007 23:39:59

Slightly off topic
The field strength is decreasing and comic rays /and bombardment from the sun.....
are these the same as cosmic rays, just less serious?
[:I] [;D]