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Name:  carol a jackson
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: 1999


Question:
Does the mass of the Earth ever change?


Replies:
Yes, although usually not by much. The Earth's gravity is constantly pulling in dust and meteorites that are very slowly increasing the mass of the Earth. Occasionally an asteroid or a comet strikes the Earth, and this produces a somewhat larger mass increase.

I tried to look up an estimate for the mass increase of the Earth per year. I couldn't find that number, but, in a totally unrelated matter, I did find out that the weight of all living things on the planet is less than one ten billionth the weight of the planet as a whole. Fancy that.

-Grant


The mass of Earth also decreases when we launch a spacecraft into space.

allsopp



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