Discuss the relationship between a star's twinkling, its size, its position above the horizon, and atmospheric conditions?
Discuss the relationship between a star's spectral type, distance, and apparent magnitude. Provide a data to strengthens your observation that most nearby stars are cooler stars. Do the spectral types and distances of Procyon, Tau Keid, Beta Hydri, Chi¹ Orionis make their apparent magnitudes very different from those of Sirius, Canopus, Capella, Betelgeuse, Rigel, and Achernar?