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Life in the universe |
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Planetary habitability in the Solar System |
Life outside the Solar System |
Habitability of... |
The habitability of F-type main-sequence star (or yellow-white dwarf) systems is disputed due to the shorter lifetimes (3-8 Gyrs as opposed to 9-15 Gyrs for G stars) and higher levels of UV radiation. Indeed, F0 stars (7,400 K, 1.6 M☉︎, 1.7 R☉︎, ~7 L☉︎) are considered by many scientists as the hottest and most massive stars capable of supporting habitable planets. A planet orbiting an F-type star at the Earth boundary within the HZ would receive 2.5 (F9 star) to 7.1 (F0 star) times the UV that Earth gets from the sun.[1]
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