Titan%20is%20Saturn's%20largest%20moon%20and%20is%20very%20similar%20to%20Ganymede%20and%20Callisto%20in%20mass,%20radius,%20and%20density. - PowerPoint PPT Presentation

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Titan%20is%20Saturn's%20largest%20moon%20and%20is%20very%20similar%20to%20Ganymede%20and%20Callisto%20in%20mass,%20radius,%20and%20density.

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The rings composed of thousands of smaller ringlets which are caused by gravitational resonances produced by the many moons. False color image of Saturn s rings as ... – PowerPoint PPT presentation

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Title: Titan%20is%20Saturn's%20largest%20moon%20and%20is%20very%20similar%20to%20Ganymede%20and%20Callisto%20in%20mass,%20radius,%20and%20density.


1
Titan is Saturn's largest moon and is very
similar to Ganymede and Callisto in mass, radius,
and density. This implies that Titan may have a
rocky core with a thick mantel of ice also.
Titan can retain a thick atmosphere made up of
Nitrogen, argon and methane because it is so cool.
2
The Cassini spacecraft has studied Titan in
detail. Its hazy atmosphere appears to be made
of organic gasses like methane.
3
Cassinis probe detected drainage channels and
smooth lakes filled with liquid methane.
4
Triton is Neptunes largest moon. It is very
cold (37ko) and has a thin atmosphere of nitrogen
and an icy surface that reflects a lot of
sunlight. The nitrogen condenses and can be seen
as frost near the south pole of the
moon. Voyager II also saw great jets of nitrogen
erupting from its surface. Triton has a
retrograde orbit around Neptune.
5
Medium sized moons of Saturn
6
Five medium sized moons of Uranus
7
Miranda is an asteroid sized moon of Uranus with
an odd fractured, grooved surface which is
currently unexplained.
8
Saturns Rings
Rings are made up of small rocks and dust and not
a solid sheet of material. The rings composed of
thousands of smaller ringlets which are caused by
gravitational resonances produced by the many
moons.
9
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10
False color image of Saturns rings as seen form
Voyager II compared to size of the Earth.
The rings are shepherded by moons that can twist
the ringlets into thin ribbons.
11
Astronomers think rings are produced when moons
get too close to a planet and gravitational tidal
forces break them apart. The distance where
they break apart is called the Roche limit.
12
Rings of other planets
13
Astronomers can use occultations to see how
starlight changes when the rings pass in front.
How Uranus rings were discovered
14
Uranus rings as seen by Voyager II
Shepherd moons of the epsilon ring
15
Neptunes Rings
16
Ground based discovery photo of Plutos moon
Charon
Hubble Space Telescope image of Pluto and its
moons.
17
Trans-Neptunian objects
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