Friday, December 24, 2010

KNOW OUR UNIVERSE (a space for SPACE )

GRAVITY OF NINE PLANETS:                                                                                                       MERCURY-3.7,  VENUS-8.9,  EARTH-9.8 OR 10, MARS-3.7, JUPITER- 23.1, SATURN- 9,  URANUS- 8.7, NEPTUNE- 11, PLUTO-0.6.
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