Why are F, A, B, and O-type stars generally excluded from top candidate lists for life?
Answer
They burn fuel too quickly, often lasting only a few hundred million years.
Stars significantly larger and hotter than the Sun, categorized as F, A, B, and O-type stars, are excluded from primary habitability searches because of their extremely short lifespans. They consume their fuel rapidly, often lasting only a few hundred million years. This timescale is widely considered insufficient for the slow, complex processes required for life to originate and evolve to advanced stages. Furthermore, these massive stars also tend to emit disproportionately high levels of damaging ultraviolet (UV) radiation.
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