the solar system. astronomical unit an astronomical unit is a unit of distance equal to the distance...
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The Solar System
Astronomical Unit
• An astronomical unit is a unit of distance equal to the distance between the sun and the Earth.
• Abbreviated AU
Inner Planets
• The four planets closest to the sun• All are solid, rocky
Object
Position from the
sun SizePhysical Traits Rocky?
Interesting Facts
Mercury 1smallest planet yes
Inner Planets
Object
Position from the
sun SizePhysical Traits Rocky?
Interesting Facts
Mercury 1smallest planet yes
Inner Planets
Venus 2
almost identical to Earth
acid atmosphere with extreme high temp yes
hotter than Mercury, greenhouse effect
Object
Position from the
sun SizePhysical Traits Rocky?
Interesting Facts
Mercury 1smallest planet yes
Inner Planets
Venus 2
almost identical to Earth
acid atmosphere with extreme high temp yes
hotter than Mercury, greenhouse effect
Earth 3
only planet with liquid water yes Blue Marble
Earth- The Blue Marble
Object
Position from the
sun SizePhysical Traits Rocky?
Interesting Facts
Mercury 1smallest planet yes
Inner Planets
Venus 2
almost identical to Earth
acid atmosphere with extreme high temp yes
hotter than Mercury, greenhouse effect
Earth 3
only planet with liquid water yes Blue Marble
Mars 4
about half the size of Earth has icy poles yes Red Planet
Mars- The Red Planet
Asteroid Belt
Object
Position from the
sun Size Physical Traits Rocky? Interesting Facts
Mercury 1 smallest planet yes Inner Planets
Venus 2almost identical to Earth
acid atmosphere with extreme high temp yes
hotter than Mercury, greenhouse effect
Earth 3 only planet with liquid water yes Blue Marble
Mars 4about half the size of Earth has icy poles yes Red Planet
Asteroids
vary - dust to several miles across
iron, stone or stoney-irons yes
Ceres is the largest known asteroid
Outer Planets
• The four planets furthest from the sun, past the asteroid belt
• All are gaseous, “Gas Giants”• All the outer planets have rings!
Object
Position from the
sun Size Physical Traits Rocky? Interesting Facts
Jupiter 5
largest planet, 11 times the size of Earth Great Red Spot no
Outer Planets
Jupiter’s Great Red Spot
Object
Position from the
sun Size Physical Traits Rocky? Interesting Facts
Jupiter 5
largest planet, 11 times the size of Earth Great Red Spot no
Outer Planets
Saturn 6 9.4 times Earth rings no would float on water
Object
Position from the
sun Size Physical Traits Rocky? Interesting Facts
Jupiter 5
largest planet, 11 times the size of Earth Great Red Spot no
Outer Planets
Saturn 6 9.4 times Earth rings no would float on water
Uranus 7 4 times Earth knocked on its side no knocked on its side
Uranus’s Tilted Axis
Object
Position from the
sun Size Physical Traits Rocky? Interesting Facts
Jupiter 5
largest planet, 11 times the size of Earth Great Red Spot no
Outer Planets
Saturn 6 9.4 times Earth rings no would float on water
Uranus 7 4 times Earth knocked on its side no knocked on its side
Neptune 8almost 4 times Earth no
rains diamonds, Great Dark Spot
Neptune
Object
Position from the
sun Size Physical Traits Rocky? Interesting Facts
Jupiter 5
largest planet, 11 times the size of Earth Great Red Spot no
Outer Planets
Saturn 6 9.4 times Earth rings no would float on water
Uranus 7 4 times Earth knocked on its side no knocked on its side
Neptune 8almost 4 times Earth no
rains diamonds, Great Dark Spot
Comets varyice, dust and rock combination
some are
“dirty snowballs”, tail always faces away from the sun
Object
Position from the
sun Size Physical Traits Rocky? Interesting Facts
Mercury 1 smallest planet yes Inner Planets
Venus 2almost identical to Earth
acid atmosphere with extreme high temp yes
hotter than Mercury, greenhouse effect
Earth 3 only planet with liquid water yes Blue Marble
Mars 4about half the size of Earth has icy poles yes Red Planet
Asteroids
vary - dust to several miles across
iron, stone or stoney-irons yes
Jupiter 5
largest planet, 11 times the size of Earth Great Red Spot no
Outer Planets
Saturn 6 9.4 times Earth rings no would float on water Uranus 7 4 times Earth knocked on its side no knocked on its side
Neptune 8almost 4 times Earth no
rains diamonds, Great Dark Spot
Comets varyice, dust and rock combination
some are
tail always faces away from the sun
Comet Tails
• always face away from the sun!
Our Solar System
Summary• An astronomical unit is a unit of distance equal to
the distance between the sun and the Earth. Abbreviated AU
• The Inner Planets: the four planets closest to the sun, all are solid, rocky, and small with few, or no, moons
• The Outer Planets: the four planets furthest from the sun, past the asteroid belt, all are huge, gaseous (“Gas Giants”), all the outer planets have rings!
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