In Brief It turns out the observable universe has at least 10 times more galaxies than the mid 1990s Hubble Deep Field images count of about 100 to 200 billion. The development of more advanced space telescopes in the future could unveil even more of the observable universe. The expanded UniverseIt turns out, what we call the observable universe — the part visible within our cosmological horizon, A.K.A. the final frontier — has at least 10 times more galaxies than the mid 1990s Hubble Deep Field images count of about 100 to 200 billion.Using collected data from various deep space images from the Hubble Space Telescope and other sources, an international team of scientists led by Christopher Conselice from the University of Nottingham, UK, created a 3D map of the known universe. Mathematical models were used to calculate for galaxies current telescopes cannot yet observe. These showed that, to make sense of the numbers and the maps, about 90% of galaxies are far, far away and too faint to be seen clearly.