Byss was a planet in the Deep Core, near the center of the galaxy, discovered no earlier. A local day lasted 31 standard hours and a local year lasted 207 local days. It was the endpoint of the Byss Run. Byss itself was somewhat of a myth, seeming to be the perfect place to live. Its eerie blue-green glow, caused by its sun, also added to the strangeness of the world. Despite this outward appearance, however, Emperor Palpatine's dark side energies were everywhere, corrupting not only the inhabitants, but the planet itself.

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