NASA Reveals Incredible Image of Star Cluster Shining in Ultraviolet. Just outside the Milky Way Galaxy, roughly 210,000 light-years from Earth, there is the dwarf galaxy known as the Small Magellanic Cloud (SMC).
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Part of the satellite galaxy's star cluster NGC 346. (NASA/ESA/STScI/ Gladys Kober)


Measuring about 18,900 light-years in diameter and containing roughly 3 billion stars, the SMC and its counterpart – the Large Magellanic Cloud (LMC) – orbit the Milky Way as satellite galaxies.