There are probably more than 170 billion galaxies in the observable universe

There are probably more than 170 billion galaxies in the observable universe

Different calculations provide different numbers for how many galaxies there are in the observable universe – that is the part of the universe we can see from Earth with our current technology, there maybe many more but they are simply to far away for our telescopes to detect. Using data from the Hubble Telescope astronomers have calculated there are likely to be around 170 billion galaxies in the observable universe.


Source: http://www.lifehack.org/articles/lifestyle/20-extraordinary-and-inspiring-facts-about-the-universe.html