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History of Astronomy Part 1: The Celestial Sphere and Early Observations | R
History of Astronomy Part 1: The Celestial Sphere and Early Observations
http://qindex.info/d.php?c=42#3454

History of Astronomy Part 2: Early Measurements of the Earth | R
History of Astronomy Part 2: Early Measurements of the Earth
http://qindex.info/d.php?c=42#3461

Solar System | R
Solar System 101 | National Geographic
http://qindex.info/d.php?c=42#4740

Sun | R
Sun 101 | National Geographic
http://qindex.info/d.php?c=42#4926

The Riddle of The Zodiac | R
The Riddle of The Zodiac (Documentary)
http://qindex.info/d.php?c=42#4707
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