Many, many galaxies, more than we thought in the past populate the#universe.
To date, we can say that the number of galaxies is ten times greater than that known so far. To say it are the space telescopes, first of all Hubble. Published onAstrophysical Journal, this discovery is due to the group of Christopher Conselice, of the British University of Nottingham.
The universe that until yesterday we were able to observe contained about 200 billion galaxies, but the new data tells us that this is a downward estimate of at least 10 times. Thanks to a simulation, in fact, the researchers were able to deduce the existence of galaxies that the current generation of telescopes cannot observe. There must therefore be an additional 90% of galaxies in the observable universe that are too faint and small or too far away for us, with our current instruments, to see them.
The sky is still dark because the light from many stars of these galaxies, the authors of the research explained, is Invisible to the human eye and most modern telescopes due to many factors. We don't see them but they are there. And soon, with the latest generation telescopes, we will be able to observe them.