The Most Distant Galaxies Yet Found
Using the 10-meter Keck telescope on Mauna Kea, astronomers will shortly report the most distant galaxies yet detected. They were detectable only by gravitational lensing from a foreground galaxy. These 6 galaxies were fully formed only 500 million years after the Big Bang. At this time they were already forming stars. Present theories of galaxy formation can not explain the formation of galaxies so early.
Every galaxy yet found contains at its centre a massive Black Hole. Galaxies formed around these objects like whirlpools around a drain. Primordial Black Holes have been predicted by Stephen Hawking and many physicists. A Universe of evidence tells us that supermassive Black Holes are primordial, formed shortly after the Big Bang.
PBH's are predicted to have formed from quantum fluctuations shortly after the Big Bang. Their size would be limited by a "horizon distance," that light could travel in a given time. Previously it was thought that the speed of light would cause any PBH's to be tiny. Discovery of galaxies fully formed soon after the Big Bang is still more evidence of a changing speed of light.