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Question:
What is Neptune's temperature ?


Replies:
I do not know, but we can make a guess. The energy receiving each square meter of the planet varies as the inverse square of the distance to the sun. We would expect the average temperature to be proportional to the average temperature of earth multiplied by the square of the ratio of the distance of ea rth from sun to distance of Neptune to sun or the square of 150/4500. You should be able to work this out. Remember to square this number and then multiply by the average earth temperature.

Samuel P Bowen



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