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5. Why does the moon keep its same face pointing towards the earth? 6. How often can the
following objects be seen AT MIDNIGHT on a clear night in Stamford? Mark each one "Never",
"Sometimes", or "Always". a. The Big Dipper b. Venus c. The Southern Cross d. Mars e. The
celestial equator f. Orion g. A full moon h. The ecliptic i. A new moon 7. Match the astronomer
to his accomplishment a. Ptolemy i. Made very accurate naked-eye observations b. Copernicus ii.
Believed in testing nature, used a telescope to observe the heavens c. Tycho iii. Proposed a
heliocentric cosmos d. Kepler iv. Proposed a geocentric cosmos e. Galileo v. Derived physical
laws of gravity and motion f. Newton vi. Derived laws describing the motions of the planets

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