Check out this dramatic and slightly alarming picture of a huge filament emanating from the surface of the Sun, courtesy of NASA’s Solar Dynamics Observatory. The filament is about 700,000km long, apparently – that’s an entire Solar Radius. It’s expected to collapse back into the Sun at some point, an event which should be rather exciting! For more details see here.
Even better, here’s a close-up animation.
It reminds me a bit of that Balrog thing in The Lord of the Rings that gave Gandalf such a good run for his money.