What characteristic differentiates the habitable zone of F-type stars from that of G-type stars?
Answer
The habitable zone for F-stars is farther out, but the range of stability is narrower.
F-type stars are significantly hotter and more massive than the Sun (G-type). This higher energy output dictates a shift in the location of the habitable zone, pushing it farther away from the star than the Sun's moderate distance. Crucially, this increased energy output also shrinks the margin for error; the range of orbital distances where liquid water could stably exist—the habitable zone itself—is much narrower for F-stars compared to G-stars. This narrow margin, combined with the star's short lifespan, reduces the suitability for long-term biological development.
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