Astronomy Picture of the Day Question In Ptolemy's geocentric model, the normal (non-retrograde) motion of the planets was attributed to actual motion along what circle?…

Astronomy Picture of the Day Windows on the Universe Simulation: Comets and Retrograde Motion Testing - the key to science Greeks Rational thought was sufficient Inconsistencies…

The Organization of the Solar System and Planetary Motion At first⦠The Egocentric Earth Ancient Greece: planets, Sun, Moon, and stars orbit around the Earth Pythagoras…

Origin of Modern Astronomy Early Astronomy  Astronomy is the science that studies the universe. It includes the observation and interpretation of celestial bodies and…

PowerPoint Presentation Light and Astronomical Observations Earth Science A spectrum is produced when white light passes through a prism The study of light Ancient Greeks…

Slide 1 Astro 101 Fall 2013 -- Lecture #2 Ancient Observers Noticed the “Wandering Stars” (e.g., planets) … They saw that sometimes they had “retrograde” motion.…

Keplerâs Laws Keplerâs Laws Keplerâs Laws Johannes Kepler Marsâ orbit is not a perfect circle, it is elliptical The speed of Marsâ orbit changes Closer to sun = faster…

Chapter 4 Nicholas Copurnicus Chapter 3 Survey of Astronomy [email protected] astro1010-lee.com Wanderers (Planets) Inferior Nearer the Sun than the Earth Morning Star/Evening…