Main sequence G stars, of which the Sun and Alpha Centauri A are examples, are the prime targets of searches for extrasolar planets and targeted SETI programs.
G-type giant stars, such as Capella, are slightly cooler but more luminous than their main sequence counterparts, while G-type supergiants have a mass of 10 to 12 solar masses and a luminosity of 10,000 to 300,000 times that of the Sun.
Related entry• Sun-like stars
Related category• TYPES OF STARS
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