Sirius XM is a satellite radio service in the United States that provides a wide range of music, news, sports, and talk programming. It was formed in 2008 through the merger of two satellite radio companies, Sirius and XM Radio. Subscribers can access hundreds of channels, including commercial-free music, live sports coverage, and exclusive talk shows. The service is available through various platforms, including dedicated satellite radios, mobile apps, and online streaming. Sirius XM also offers specialized content, such as channels dedicated to specific artists or genres, making it a popular choice for diverse listening preferences.