Hi all
I read on spaceweather this afternoon that there is a filament on the Sun that is over 1,000,000 kilometers long! A filament is a mass of gas suspended over the chromosphere by magnetic fields and seen as dark ribbons threaded over the solar disk - Hydrogen Alpha scopes see these very well.
I rushed home to take a look - 1,000,000 km - that is something.
I managed only a few rushed AVI's and this was the best - the filament has now broken up a little but was still an impressive sight - the largest I have seen.
http://www.pbase.com/mattwastell/image/122192343
Thanks for looking!