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symbo symbo
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7 years ago
It is unlikely that planets near stars much more massive than our Sun would develop life because
A)   planets would have to be too close to these cool stars in order to be sufficiently warm for life to evolve and they would become tidally linked, resulting in no night and day.
B)   these stars would have evolved to red giant and even supernova stages before life could evolve sufficiently to produce a civilization.
C)   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.
D)   there would be no region around the star where UV, visible, and IR light intensities would be suitable for the evolution of life.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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papachulopapachulo
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7 years ago
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