Foundation 1 - Discovering Astronomy

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Chapter 7 The Outer Planets
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Interiors
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Interiors
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Magnetic Fields
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Aurorae
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Rings
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Moons

• Jupiter over ____ moons!
• Saturn- over ____ moons!
• Uranus- over ____ moons!
• Neptune- over ____moons!

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Jupiter King of the Gods
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Jupiters rotation helps create colorful global
weather patterns
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Jupiters ______________
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Jupiters Galilean Moons
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Saturn God of Harvest
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Saturns Rings

• material that was torn apart by Saturns gravity
  or material that failed to coalesce into a moon
• __________ the critical radius
• within which material can be torn apart by the
  planets gravity
• consist of particles from a few centimeters to a
  meter across

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Saturns Rings
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Saturns Moon Titan
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Saturns moon Enceladus
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Uranus
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Uranus tilt gives it very exaggerated seasons
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Uranuss Moon Miranda
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Neptune God of the Sea
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And then, there is one planet unlike any of the
others ..
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Pluto Ruler of the Underworld
Pluto was discovered by Clyde Tombaugh in 1930 by
comparing one image of the sky taken one night
with an image taken 6 nights later.
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Plutos Size

• Plutos diameter ______ Charons diameter
  __________

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HST discovers two new moons!
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What is Pluto?

• Pluto is a mixture of ________and _________
• composition similar to satellites of giant
  planets than terrestrial planets
• Strange planet small size, eccentric and highly
  inclined orbit, located far out from the Sun with
  gas giants
• Could be captured _______________ (e.g.
  ________)?

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Sedna Inuit Goddess of the Sea
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10th Planet???
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What is your definition of a planet?

• What kind of characteristics should a planet
  possess?
• How would you classify Pluto, Quaoar and Sedna
  under your classification scheme?