Scale: 1a, 2c, 3d, 4d The Sky: 1c, 2d, 3b, 4d The moon: 1a, 2d, 3c, 4b History: 1c, 2a, 3a, 4b Newton: 1a, 2a, 3c, 4c Light: 1b, 2d, 3c, 4c Atoms: 1a, 2b, 3d, 4b Sun 1a, 2c, 3a, 4d Stars: 1d, 2a, 3b, 4c ISM: 1c, 2b, 3b Star formation 1e, 2c, 3b, 4d, 5d Stellar evolution 1a, 2d, 3b, 4c Star death: 1a, 2b, 3a black holes: 1c, 2e, 3d Milky Way: 1d,2b,3d,4a Galaxies: 1a,2b,3a,4c,5d Cosmology: 1b, 2c, 3c, 4b, 5c