Satellite Radio - Sirius was previously known as CD Radio. The company changed its name to Sirius Satellite Radio Inc. on November 18, 1999. The name is derived from Sirius, sometimes referred to as the Dog Star, the brightest star in the night-time sky. The dog in the Sirius logo is unofficially named “Mongo,” a name garnered from the debut of Sirius Satellite Radio’s sponsorship on Casey Atwood’s and later Jimmy Spencer’s NASCAR entry, when the announcing cast voted on names. “Mongo” later became NASCAR driver Spencer’s nickname with the NASCAR Broadcasters (mainly Darrell Waltrip) in the following races.