Hydrogen Beginner 07/12/2012 Krypton Beginner 07/12/2012 Neon Beginner 07/12/2012 Helium Intermediate 07/12/2012 Argon Beginner 07/12/2012 Chlorine sealed in a quartz vial Beginner 07/11/2012 Crab Nebula Intermediate 06/25/2012 Balloon Exploded by Flame Beginner 05/29/2012 Powder Balloon Explosion Beginner 05/29/2012 Lagoon Nebula (M8) & Trifid Nebula (M20) Beginner 05/10/2012