ASTR 1101 : AstronomyReviewTest1
Document Summary
Planet, star, solar system, galaxy, universe astronomical unit a unit of measurement equal to earth"s average distance from the sun, about 150 million kilometers (93 million miles) Distance light travels in one year 63,000 au or 0. 307 parsecs. How long does it take to get from one end of carina nebula to the other end. One meter equals roughly 3 feet philosophical ideas of the ancient greeks. The heavens represent perfection, the heavens can not be changed ,the circle is a perfect shape. He tried to build a comprehensive model of the solar system that was earth centered. Over the course of one day the sun, moon, stars, and planets move because the earths rotation appears to make everything move around the sky. Over the course of one day, the sun, moon, planets, & stars all move because: the earth"s rotation makes everything appear to move across the sky.
