Quote:
Originally Posted by freebeard
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In the 1990s,NASA flew a satellite mission to research our solar system's heliosphere,which is analogous to a solar system-scale magnetosphere,which extends out from the Sun 100 X 93,000,000 miles.
Earth's magnetosphere is embedded within this heliosphere,and is interactive with it.
At the Sun's poles,there are 'holes' in the corona.Only at the poles,and they don't affect Earth.
In the ecliptic region of the heliosphere along which Earth orbits,Earth is exposed to what NASA spoke of as (electrical) 'current sheets' which exists in the magnetized plasma solar wind traveling at 400 km/s,which are associated with the solar magnetic lines of flux between sun and earth.
High-speed solar wind can overtake slow-speed solar wind,creating shock/acceleration 'corotating interaction regions' (CIR) which push intersteller plasma out of the solar system.
These current sheets and CIRs may underlie what they refer to as 'ropes.'It's a form of magnetic turbulence.
Earth's own magnetosphere is supposed to be able to deflect the solar wind,but as I understand it,a CME is an entirely different proposition.The Gauss of magnetosphere is no match for the inertia/momentum of a CME,and it just comes right through to the surface of the planet for the last extinction event.