Sort Stars Into Stellar Classifications

Stars are classified by astronomers using the Morgan-Keenan spectral classification system, which groups stars by their temperature, color, and luminosity. The main sequence classes from hottest to coolest are O, B, A, F, G, K, and M - Remembered by the mnemonic 'Oh Be A Fine Girl, Kiss Me.' Our Sun is a G-type main-sequence star. O and B stars are hot, blue, and massive but short-lived. K and M stars are cooler red stars that are incredibly long-lived and abundant. Beyond main sequence, there are giant and supergiant classes. In this sortable quiz, you'll classify famous stars and star types into their correct stellar classification categories.

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