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8 godz. temu · The Sun is gradually becoming hotter in its core, hotter at the surface, larger in radius, and more luminous during its time on the main sequence: since the beginning of its main sequence life, it has expanded in radius by 15% and the surface has increased in temperature from 5,620 K (9,660 °F) to 5,772 K (9,930 °F), resulting in a 48% ...
8 godz. temu · The whole surface area of the Moon is about 38 million square kilometers, almost exactly the area of the whole American landmass. The Moon's mass is 1/81 of Earth's, [70] being the second densest among the planetary moons, and having the second highest surface gravity , after Io , at 0.1654 g and an escape velocity of 2.38 km/s ( 8 600 km/h; 5 ...
