Found this via Phil Plait's amazing Bad Astronomy blog*:
On August 31st the Sun produce an immense solar flare: click here for a picture from Nasa with the Earth to scale or better still just go straight to the 1900x1200 version. I've made a crop of the picture below just to give a teaser:**
Now Nasa and the Goddard Space Flight Center have released a video of the event:
Make it full-screen and switch to 1080p, sit back and be impressed....
* You really should read this blog every day
** Using NASA Imagery and Linking to NASA Web Sites