Test 1 - Astronomical Unit: The average distance between...

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Astronomical Unit: The average distance between the Earth and the Sun, about 93 million miles Light Year: The distance light travels in a year, about 6 billion miles Asterism: An unofficial star picture Constellation: One of 88 official star pictures Circumpolar: A constellation or star that never sets Seasonal: A constellation or star that is only visible at certain times Angular Size: The angle between the opposite sides of a celestial object Angular Separation: The angle between two different celestial objects Degree Arcminute Arcsecond Celestial Sphere: The imaginary sphere of celestial objects that seems to surround earth North and South Celestial Poles: Projections of Earth’s axis onto the celestial sphere Celestial Equator: A projection of the Earth’s equator onto the celestial sphere Ecliptic: The apparent path of the sun on the celestial sphere Zodiac: The constellations the sun passes through Meridian Horizon: Where the earth meets the sky Zenith: Right above your head
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Test 1 - Astronomical Unit: The average distance between...

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