ASTR 101 Chapter Notes - Chapter 2, 4: Celestial Equator, Earth'S Rotation, Lunar Eclipse
Document Summary
Explain, according to both geocentric and heliocentric cosmologies, why we see retrograde motion of the planets. Copernicus and galileo believed in the heliocentric model as opposed to the ancient greek view of a geocentric universe. Features of the moon"s surface, such as mountain ranges, valleys, etc. The milky way is made of individual stars. Ursa minor contains the pole star, polaris, and the asterism known as the little. From most locations in the northern hemisphere, all of the stars in ursa. Circumpolar stars are always above the horizon (i. e. they never set) Explain how the zodiacal constellations are different from the other. Explain how the zodiacal constellations are different from the other constellations. The zodiacal constellations are the 12 constellations that are based on the ecliptic (the path of the sun in earth"s celestial sphere) whereas other constellations are not. All zodiacs are constellations, but not all constellations are zodiacs. The sun was once thought to be a planet.
