ASTR 1101 Final: Final Study Guide - OUTLINE OF TEST 1 - FINAL
Document Summary
1 au = 93,000,000 miles / 150,000,000 km, earth"s avg. distance from the sun. 1 light year = 9. 46e10^12 km / 63,000 au / 0. 307 parsecs: from smallest, to largest - earth, star, solar system, milky way galaxy, the local group, 0 degrees would see no change throughout the year: ptolemy"s model of the solar system, an earth-fixed model. None exist at the equator: constellations are collections of stars. The sun would be the fixed center, and the other planets, including earth, would orbit it: tycho brahe was acclaimed as the world"s best naked eye astronomer, made extremely accurate observations without a telescope. Occurs when earth passes a planet: ptolemy dealt with the issue by theorizing that the planets experience epicycles during orbit. while orbiting earth, used the idea of parallax to estimate the distance of celestial occurances. Galileo galilei (italian, 1564 1642) father of modern science . He strongly supported a heliocentric solar system: discovered the scientific method.
