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doit_the_clown doit_the_clown
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7 years ago
It is unlikely that intelligent life would develop on a planet circling a star of significantly less mass than the Sun because
A)   no Moon would form around a planet near such a star, and a Moon is considered to have been essential for the evolution of life because of tidal variations on the Earth.
B)   the lifetime of such a star on the main sequence is too short; life-forms on such a planet would not have time to evolve intelligence.
C)   the planet would likely become tidally locked to the star, making one side of the planet too hot and the other side too cold.
D)   there would be no region around the star where UV, visible, and IR light intensities would be suitable for the evolution of life.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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discovererdiscoverer
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7 years ago
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doit_the_clown Author
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7 years ago
Good timing, thanks!
bioc
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Yesterday
This calls for a celebration Person Raising Both Hands in Celebration
wyq2651
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2 hours ago
Smart ... Thanks!
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