Related terms:
when the moon
armillary sphere
equatorial ring
chinese astronomers
apparent diameter
solar eclipse
tycho brahe
astronomical observations
celestial globe
penumbra
islamic astronomy
zhang heng
astrolabe
celestial bodies
annular
saros
viewed
Wikipedia sources:
Lunar eclipse
Eclipse
Hipparchus
Lunar phase
22nd century
Indian mathematics
Johannes Kepler
Abu Rayhan Biruni
Solar eclipse of July 22, 2009
Chinese astronomy
Moon
Christopher Columbus
H2O: Just Add Water
Zhang Heng
11th century
Context for words:
lunar
eclipse
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