Science - Hubble constant is 70km/s per megaparsec Mpc 1 parsec = about 3 light years 1 mega = 1 million so 1 megaparsec Mpc= 3 million light years distance thus it
Which unit would you use to measure the distance between galaxies? What is the distance for one unit? - Quora
Futurism - The Milky Way is 100,000 light-years across. Think that's big? The largest galaxy in the known universe is 6 million light-years across. http://futurism.com/ic-1101-the-largest-galaxy-ever-found/ | Facebook
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NASA's Hubble Telescope Spots A Cosmic Megamaser Millions of Light-Years From Earth - Space Coast Daily
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