Comet Siding Spring approaching Mars – photo from Australia by Damian Peach. Better (bigger) photo at:
http://www.livecometdata.com/wp-content/uploads/2014/10/cometmars_peach_1080.jpg
Now THAT’S an image with dynamic range! (NASA’s version is composite.)
The Sun, Oct. 16 – 24, 2014 as sunspot 2192 develops: