Astronomers have recently discovered that a little galaxy has a big secret. Ultra compact dwarf galaxies (UCD) contain about 100 million stars spanning a couple hundred light years. As a comparison, our Milky Way has about 219 million stars spread across 100,000 light years. Using the Hubble Space T…
by José Lourenço via Facebook at September 18, 2014 at 08:21PM
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