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10 cards from this deck
Absolute magnitude (brightness) & spectral type (temperature)
O B A F G K M
Oh Be A Fine Guy/Girl Kiss Me
Brighter stars (e.g., −5-5−5 brighter than +10+10+10)
Fusing hydrogen into helium in cores
Enormous surface area
Extremely small size (Earth-sized)
Blue (hot) vs red (cool)
Gravitational potential energy from collapse
More massive = less time (faster fuel burn)
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