Expand all + The Sun 8B10.10 - 60 W Sun 8B10.50 - Sunspot on the Overhead 8B10.60 - Random Walk with Bumble Ball + Stellar Evolution 8B30.30 - Variable Star Simulation 8B30.40 - Collapsing Star - Hoberman Sphere 8B30.50 - Supernova Core Bounce 8B30.65 - Pulsar Model 8B30.75 - Pulsar Recordings 8B30.95 - Forward and Backward Scattering + Black Holes 8B40.10 - Black Hole Surface 8B40.20 - Membrane Hoop