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Question
I would like to know how many natural satellites there are in each planet except Earth.
More satellites are being discovered every year, mostly very faint and distant moons that can be be imaged with modern telescopes and detectors. The number has increased rapidly, and more than 100 satellites are known today, almost all of them in the outer solar system. The best way to keep up with the count is using the Internet, for example at The Nine Planets Site.
David Morrison
NAI Senior Scientist
October 6, 2003
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