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How big is this spider?
How big is Earth?
Our Solar System
Scale Size of Terrestrial Planets
Scale Size of All Planets
Scale Size of Solar System
Sizing up our Solar System
Which star is our Sun?
1
2
3
4
What happened to Pluto?!
What makes a planet a planet?
A Celestial body that:
• Is in orbit around the Sun
• Has enough gravity to be nearly
spherical
• Has dominated the area around its
orbit
Other Objects in our Solar System…
Vesta
• Asteroids
• Moons
Ida (has its own moon)
Other Objects in our Solar System…
• Comets
• Meteors