The Planets

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The Planets
and Other Objects in the Solar System
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Mercury
Cratered surface like the moon Rotation - 59
Earth days Revolution 88 Earth days Magnetic
Field Temperature Maximum 427 C Minimum -173
C Atmosphere H,Na,O
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Surface of Mercury includes cliffs, basins,
plains, craters
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Venus
Earths twin Rotation - -243 Earth
days Revolution 224 Earth days Magnetic
field Temperature 482 C Atmosphere CO2, N
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Venus Surface Mountains, valleys,
basins, craters, volcanoes, rifts
Atmosphere thick clouds with Sulfuric acid
droplets
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Mars
The Red Planet ½ the size of Earth Rotation -
25 hours Revolution 687 Earth days Magnetic
field Temperature -140 - 20 C Atmosphere
CO2, N, Ar, 0
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Surface includes plains, volcanoes, mountains and
evidence of water in the past. Dust storms occur
today.
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Moons of Mars Deimos and Phobos are both
very small.
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Jupiter
Largest planet Rotation 9.6 hours Revolution
11.9 years Ring system present Temperature
-121 C Atmosphere H, He Moons - 40
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The Great Red Spot is a powerful storm system,
lightening occurs in the clouds in the atmosphere
of the planet.
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Europa
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Ganymede
Ice volcanoes occur on the moon.
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Io
Volcanic eruption is seen.
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Callisto
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Saturn
Second largest planet Rotation 10
hours Revolution 29 years Complex system of
rings Temperature -125 C Atmosphere H,
He Moons - 30
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Ring system
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Iapetus
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Rhea
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Tethys
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Uranus
Third largest planet Rotation - -17.9
hours Revolution 84 years Magnetic
field Temperature -193 C Atmosphere H, He,
Methane Ring system Moons - 21
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Oberon
Titania
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Ring system composed of ice boulders and dust.
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Neptune
Blue color result of methane gas in
atmosphere. Rotation 16 hours Revolution 165
years Temperature -153 to 193 C Atmosphere
H,He, methane Rings present Moons - 8
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Storms occur in the atmosphere of Neptune. Clouds
present.
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Rings show odd twisted pattern.
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Triton
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Pluto
Smallest planet Rotation - -6 Earth
days Revolution 249 years Planet is solid
rock Atmosphere Methane, N Moon - 1
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Plutos orbit takes it inside Neptunes orbit on
occasion making it the eighth planet for a period
of time.
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Meteorites
Meteoroid small pieces of rock that results
from the breakup of comets. Meteor a meteoroid
that enters the Earths atmosphere. Meteorite
a meteor that reaches the Earths surface.
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Impact craters on Earth that result from the
impact of a meteor.
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Asteroids
A piece of rock smaller than a planet that orbits
the sun, most are between Mars and Jupiter.
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Gaspra
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Comets
A mass of frozen gases and rock particles that
orbits the sun, often developing a bright tail
when it passes near the sun.
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Diagram of a comet