Total Solar Eclipse

[dmerger]

Here is another interesting NASA photo of a total solar eclipse.

http://apod.nasa.gov/apod/ap080920.html

Maybe one of our more informed forum members can answer a question I have been pondering.  Why is the solar corona not circular?  I suspect it is due to either the earth's atmosphere or its magnetic field, but I really don't know.

[DarkPenguin]

I believe the corona rides the magnetic field.

Maybe www.spaceweather.com has some information.

[feppe]

Here is another interesting NASA photo of a total solar eclipse.

http://apod.nasa.gov/apod/ap080920.html

Maybe one of our more informed forum members can answer a question I have been pondering.  Why is the solar corona not circular?  I suspect it is due to either the earth's atmosphere or its magnetic field, but I really don't know.
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Gorgeous shot and very impressive technical details from one of the links.

The shot has nothing to do with NASA, though - it is only linked to on their site.

[pcox]

That's a stunning image - 55 exposures! Now that's HDR for you.

The corona as has been said rides the magnetic field of the Sun, so it varies quite a bit depending on solar activity. The wikipedia entry does a pretty good job of describing it.

Cheers,
Peter