Planets and the Solar System
Planets and the Solar System. There are perhaps thousands of galaxies in the universe. Galaxies contain. planets moons comets meteors asteroids. All these objects spin or orbit around a center star, our sun. sun. Solar flare. Our galaxy, the Milky Way, orbits around the sun.
Planets and the Solar System
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Presentation Transcript
Galaxies contain • planets • moons • comets • meteors • asteroids
All these objects spin or orbit around a center star, our sun.
3 main galaxy shapes • elliptical • irregular • spiral
There are thousands of galaxies, other than ours, in the universe. Some are very likely able to support life.
The planets are divided into two main groups: inner and outer
inner planets • Mercury • Venus • Earth • Mars
Olympia Mont on Mars Olympia Mont on Mars
outer planets • Jupiter • Saturn • Uranus • Neptune
Look how small the moon Io is compared to Jupiter. Our moon is 1/4 our size!