Rock Star: Supernova is the second season of the reality television show Rock Star where 15 contestants compete to become the lead vocalist for the rock band Supernova .

In March 2006, it was announced that the new season would focus on finding a lead singer for a new group entitled Supernova , featuring Motley Crue drummer Tommy Lee , former Metallica bassist Jason Newsted , and former Guns N' Roses guitarist Gilby Clarke . The show began online on the Rock Star web site on MSN on Monday, July 3 with an Internet exclusive weekly episode and premiered on 5 July 2006 on CBS in the United States and Global in Canada. Once again, it is hosted by Dave Navarro and Brooke Burke .