There is more than one artist with this name, including a straight edge hardcore band, a Chilean girl group and an American punk rock band.
These are photos from concerts where Supernova played, so they may be of other bands that played the concert as well.
Reel Big Fish / Supernova / My Superhero Feb 18, 1998 Lawrence, Kansas, United States Uploaded by Murphy59
Reel Big Fish / Supernova / My Superhero Feb 16, 1998 Salt Lake City, Utah, United States Uploaded by Tomcat0011