Technology Asteroid Apophis 99942

1.   2. What is an Asteroid? Large rocky or Metal bodies relatively warm inner solar system 3. Why chose this topic? 4. Apophis 99942 5. History...? A ncient spirit of evil…

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Documents Determination of PPN and Solar J 2 from asteroids orbits (update) D. Hestroffer, J. Berthier, S....

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