I never cease to be amazed at the ability of the Standard Model of Physics to multiply entities(an Ockhamist reference for those paying attention to the non-Ockhamist tendencies of modern physics). Well, for those of you following this, there is now:
And gee, where have we heard this before?:
"When the idea of dark matter first pushed its way into astronomers’ consciousness a few decades ago, the primary reaction was: 'Seriously? There’s a mysterious, invisible substance out there, with a mass six or more times greater than that of the visible stars and galaxies, only we have no way of detecting it, but really, it’s there? OK then.' Or something like that, albeit in more formal scientific language."