The Motion where planets appear to travel backward in the night sky
What is Retrograde Motion?
What is Heliocentrism?
The distance between two crests of a wave
What is Wavelength?
The name of our galaxy
What is the Milky Way?
What is Violet?
The Theory that the Earth is the center of the universe
What is Geocentrism?
The center of Copernicus's universe
What is the Sun?
The lowest frequency Light
What is Radio Waves?
The Star that points north in the northern hemipshere
What is Polaris?
The structures seen on the moon that helped prove Galileo's theories
What are mountains and Craters?
The proposed use for the Stonehenge site
What is a calendar?
The punishment given to Galileo for his theories
What is House Arrest?
The light emitted by humans because of their body temperatures
What is Infrared?
The height in the sky as seen from the ground
What is Altitude?
The Galaxy Cluster our Galaxy is a part of
What is the Virgo Cluster?
What are Epicycles?
The observations Galileo made about Venus and Mars
What are the phases?
The Speed of Light
What is 300,000,000 m/s
What is the Orion Arm or Spur?
The name of our closest galactic neighbor that is on a collision path towards us
What is Andromeda?
The Greek philosopher that first proposed the idea of "The Perfect Heavens"
Who is Aristole?
The 4 Galilean Moons
What are Io, Calisto, Europa and Ganymede?
The band of colors that elements emit when given enough energy
What is an emission spectra?
The name for the few closest galaxies to ours
What is the local group?
The layer of Earth's atmosphere that protects us from many forms of UV light
What is the Ozone Layer?