Hubble baffles us once again

The Hubble space telescope has yet again utterly,completely,totally...confused us.

On the 16/6/12 the Hubble space telescope imaged a young dwarf galaxy,rich with hot young blue stars, it is believed to be a satelite galaxy to Messier 81. Now for the tricky bit. There is nothing wrong with the galaxy itself or where it is but it has got us thinking about the galaxyies that we havn't found because it seems that from what we know about galactic formation and evolution galaxies like the Milky way and Messier 81 ought to have more satelite galaxies,so why havn't we found them? well there are two explinations one is that we just aren't looking hard enough and the other is that almost everything we thaught we knew about galactic formation and evolution could be wrong.