Dark matter at the heart of the sun...

"A scientist at Royal Holloway, University of London believes dark matter is lurking at the centre of the sun and cooling down its core temperature." Cue Twilight Zone theme. http://www.sciencedaily.com/releases/2010/07/100721132407.htm

What did Gene Wolfe do after the Korean war? What kind of people do the intelligence services prefer to recruit? .

http://www.submission.org/ .

You have a positive gift for non-sequitur.

Huh. I remember this from Stephen Baxter's Xeelee universe (specifically Ring) - the dark matter 'photino birds' were deliberately cooling the Sun to lengthen its lifespan and thus the timespan in which they could reproduce using it (something about dark matter needing high gravity to reach usable concentrations). (Which is, of course, an entirely different mechanic and purpose than black holes in the Sun's core.)