Mass of the Earth
Name: carol a jackson
Does the mass of the Earth ever change?
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
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.
The mass of Earth also decreases when we launch a spacecraft into space.
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Update: June 2012