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A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and ... Many galaxies are thought to have black holes at their active centers. ..... modeling of images collected over 20 years by the Hubble Space Telescope concluded that there are over 2 trillion galaxies in the observable universe.


The following is a list of notable galaxies. There are about 51 galaxies in the Local Group on the order of 100,000 in our Local Supercluster and an estimated number of about 100 to 200 billion in all of the observable universe. .... identified with a distant galaxy, being the first of many radio stars to become a radio galaxy.


Oct 13, 2016 ... Hubble Reveals Observable Universe Contains 10 Times More Galaxies ... that there are at least 10 times more galaxies in the observable universe than ... in astronomy is that of just how many galaxies the universe contains.


Oct 14, 2016 ... New research estimates there are 2 trillion galaxies in the ... The earliest estimates of the number of galaxies in the Universe were very small.


Nov 1, 2016 ... Did you hear that the Universe has 10x the number of galaxies? How did astronomers discover this, and what does it mean for the number of ...


Jan 16, 2017 ... Astronomers have long sought to determine how many galaxies there are in the observable universe, the part of the cosmos where light from ...


Oct 13, 2016 ... The group came to the surprising conclusion that there are at least 10 times as many galaxies in the observable Universe as previously thought ...


Oct 13, 2016 ... There are a dizzying 2 trillion galaxies in the universe, up to 20 times ... Scientists have puzzled over how many galaxies the cosmos harbors at ...


Apr 1, 2014 ... Astronomers say there are 100 billion to 200 billion galaxies in the universe. But accurately counting the number of galaxies depends on ...


According to the best estimates of astronomers there are at least one hundred billion galaxies in the observable universe. They've counted the galaxies in a ...