I wasn't kidding,
E N. I used the three plugins from Flaming Pear, LunarCell (for the 'world'), SolarCell for the corona and flares (the sun was more or less hidden behind the LunarCell layer) and the background was a Glitterato nebula with no stars which I then twirled. I made so many blend mode changes and multiple layers in a hurry to try and more-or-less create the feel of your image that there's no way I could do a real step by step set of directions.
http://www.flamingpear.com/download.html
(PS. FlamingPear sells the 'Space Bundle' of all three of those plugs for $40. Free Demo's available at the link.)