[math-fun] kepler-452b planet confirmed
23 Jul
2015
23 Jul
'15
2:46 p.m.
it has year=385 days, orbits a type-G2V star (same type as sun, but a bit brighter), is estimated to be 6.0 Gyr old (vs 4.5 for earth), is about 1400 lightyears away, radius 1.6*earth, guesstimated mass 5*earth, in which case surface gravity is 2*earth, and lies in "habitable zone." One of the most earth-like among about 1000 planets found by Kepler that have been confirmed so far.
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Warren D Smith