EXPLORING SPACE

MOONS

• near side moon has highlands and mare
• far side has more craters
• no air or breezes
• thin surface of gas makes up an exosphere

MOONS

• Rotation synchronized to revolution
• Categorized by size or location
• There are inner moons and outer moons
• Domes created by cooled lava

SATELLITES

• machines sent into space to collect data
• take pictures and send them to earth
• utilize telescopes to see celestial bodies

SATELLITES

• their position must be precise to record the necessary data
• astronomical satellites
• communication satellites
• search- and- rescue satellites
• discovered 2400 comets and how the sun works

ASTEROIDS

• pieces of broken planets
• varying surfaces
• too small for an atmosphere

ASTEROIDS

• revolution averages 3-6 Earth years
• classified by surface and location
• density of one asteroid was similar to water

ASTRONOMICAL UNITS

• 149,597,870,700 meters
• simple way to relate distances
• used in astronomical equations

ASTRONOMICAL UNITS

• measure of the earth to the sun
• AU of time, length, and mass
• used to keep track of where satellites are

(APPLAUSE)