Chapter 30
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
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Geocentric model
A model of the solar system where Earth is considered the center and everything else revolves around it.
Heliocentric model
The moon revolves around Earth and that Earth and the other planets revolve around the sun
Mercury
The smallest and closet planet to the Sun
Who created the geocentric model
Ptolemy
Who created the heliocentric model
Nicholas Copernicus
Who showed evidence to support the heliocentric model
Galileo Galileo
Who discovered that planets travel around the sun in ellipses
Johannes Kepler
Do planets complete their orbit at different speeds around the sun
Yes
What is astronomical unit
The average distance form Earth to the Sun
What are the planets called that are similar to earth
Terrestrial
What planes are terrestrial planets
Mercury, Venus, and Mars
What are the gas planets know as
Jovian
What planets are Jovian planets
Jupiter, Saturn, Uranus, and Neptune
What are the planets know as when their location is between the Sun and the asteroid belt
inner planets
What are the inner planets
Mercury, Venus, Earth, Mars
What are the planets outside the asteroid belt known as
outer planets
What are the outer planets
Jupiter, Saturn, Uranus, and Neptune
What are the planets known as that are between the Earth’s orbit the sun
inferior planets
What are the inferior planets
Mercury and Venus
What are the planets known as that are past Earth’s orbit
superior planets
What are the superior planets
Mars, Jupiter, Saturn, Uranus, and Neptune