Exploring Planetary Systems Ls. 1

a pseudo-science and the belief that events in the sky control our lives and predict the future

• astrology

• astronomy

• meteorology

• climatology

the science of observing the sky

• astronomy

• astrology

• seismology

• skyology

earth-centered

• geocentric

• heliocentric

sun-centered

• geocentric

• heliocentric

stars-didn't change and didn't move relative to one another

• fixed stars

• hairy stars

• shooting stars

• wandering stars

meteors-flashed across the sky

• fixed stars

• shooting stars

• hairy stars

• wandering stars

comets-moved across the sky with a tail following behind them

• fixed stars

• hairy stars

• shooting stars

• wandering stars

planets-moved across the sky following the Sun's path

• fixed stars

• hairy stars

• wandering stars

• shooting stars

first to develop a Sun-centered model of our Solar System in the early 1500s

• Copernicus

• Brahe

• Galileo

• Ptolemy

Greek astronomer who developed an Earth-centered model of the heavens

• Copernicus

• Kepler

• Ptolemy

• Lippershey