Thursday, February 23, 2012

What if鈥he Sun was a M-type star, rather than a G-type star?

What if鈥he Sun was a M-type star, rather than a G-type star? Assuming that the Earth orbiting the M-type star had the same composition and orbit distance as it does today, what would be different here?What if鈥he Sun was a M-type star, rather than a G-type star?If we are talking about an M-type main sequence star - it would be both smaller and cooler (~3000K)

So our temperature would be so cold that we would freeze



However, the sun will become an M type star when it becomes a red giant - but then it will be much bigger, so even tho the star is cooler, we would be much closer to its surface and a conservative estimate of the earth's surface is ~1400 K, which is hot enough to melt rocksWhat if鈥he Sun was a M-type star, rather than a G-type star?Well for one thing M-stars have a cooler surface temperature. Therefore if we were at the same distance from the M-type star we would be freezing. .

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