He said we can't tell the difference between whether something really happened or whether it appeared to. Hubble thought that as many galaxies would move towards us as away but found that the further galaxies were, the faster they were moving away. The universe was not unchanging with time. That means at one point, the galaxies were on top of each other. Scientists were unhappy with this idea because that suggested that at one point physics broke down. One would have to invoke an outside agency (god) to determine how the universe began which made them advance theories that the universe is currently expanding but didn't have a beginning. One theory was the Steady State Theory that as galaxies moved apart, new galaxies would be formed from matter that was supposed to continually being created throughout space. The universe would have existed for ever, and would have looked the same at all times. The Cambridge radio astronomy group did a survey of weak radio sources in the 1960s, these were distributed fairly uniformly across the sky indicating that most sources lay outside our galaxy. The weaker sources would lay outside our galaxy on average. The Steady State Theory predicted the shape of the graph of the number of sources against source strength. But the observations showed more faint sources than predicted indicating that the density sources was higher in the past this was contrary to the basic assumption of the Steady State Theory that everything was constant in time. For this, and other reasons, the Steady State Theory was abandoned.
Now you being a fucking idiot, are not going to watch the video.
