Scientists
Earth-centered universe
Ptolemy
Symmetrical shaped oval
ellipse
Ability to regenerate lost body parts
crustaceans
What is the planet closest to the sun.
Mercury
What is made up of the sun and all the heavenly bodies that orbit it?
Solar system
copernicus
Name means the "wanderers"
Planets
Two distinct body regions
spider
What is the farthest planet from the sun?
Neptune
What are the only planets with no moon?
Venus, and Mercury
Three laws of planetary motion
Kepler
Distance between the earth and the sun
Astronomical unit
three pairs of jointed legs
insects
What are the two planets closest to the sun
Venus and Earth
1 revolution
rotation
Law of universal gravitation
Newton
The force of attraction that exists between any two objects
gravity
strong pinchers
crustaceans
What are the two planets closest to Uranus?
Saturn and Neptune
The amount of time it takes for a comet to complete its orbit?
Period
The chase of the moon displaying the most light
Full moon
Eight legs
spider
List the planets in order from the sun.
Mercury, venus, earth, mars, Jupiter, Saturn, Uranus, Neptune.
What is an asteroid-size chunk of rock, dust, and ice that develops a huge, bright tail as it approaches the sun.
Comet