masses of planets

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1 total messages Started by LUDVIK KOWALSKI Wed, 01 Mar 1995 22:03

#504

Author: LUDVIK KOWALSKI
Date: Wed, 01 Mar 1995 22:03

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According to my "local expert" only two planets have no natural satelites,
Venus and Mercury. Their masses are now determined on the basis of man-made
satelites. Previously they were estimated on the basis of sizes under the
assumption that average densities are the same as on earth.

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