In the new study, an international team of astronomers, led by Professor Christopher Conselice of the University of Nottingham, converted images of deep space from telescopes around the world, and especially from Hubble, into 3D maps, in order to make accurate measurements of the number of galaxies at different epochs in the universe‘s history.
In addition, they used new mathematical models to infer the existence of galaxies that the current generation of telescopes cannot observe.
This led to the conclusion that there are a factor of 10 more galaxies in a given volume of space when the universe was a few billion years old compared with today.