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Transcript of Saturn
<http://search.ebscohost.com/login.aspx?direct=true&db=mih&AN=13522020&site=ehost-live> - Hofer, Charles. Saturn. New York, NY: The Rosen Publishing Group, 2005. - Kerrod, Robin. Saturn. Minneapolis, MN: Graham Beehag Books, 2000. - Spilker, Linda J. Personal Interview. April 30, 2013. - Erickson, Kristen. "Saturn: Overview." April 26, 2013. May 2, 2013. <http://solarsystem.nasa.gov/planets/profile.cfm?object=Saturn Worked on: - Cassini - Voyager - Outer Planets Research (OPR) - and many, many more! What are they made of? A: billions of particles made of dust and ice, compressed into layers. The theory? Two, actually. 1) the rings formed at the same time as Saturn, or 2) a comet crashed into it and broke apart. SATURN=EXTREME 1) 400,000 km wide 2) layers called by letters in the order they were found 3) spokes found on the B ring spokes: "...dark lines fanning out across the B ring, similar to the spokes of a wheel." (Source #3, page 17) - Saturn's rings travel around the planet. - 91% hydrogen - 3% helium - Cassini: meant to explore the Saturnian system - Huygens: planned to study Titan's atmosphere - Voyager I and II: meant to study the outer solar system - Pioneer 11: first mission to explore Saturn Pioneer 11 Pioneer 11 Galileo Galilei - formed over 4 billion years ago - gaseous material inside solidified into rock & ice - Galileo thought Saturn to be a system of 3 planets The Forming of Saturn - fast swirling liquid creates electric current - launched in April of 1973 - closest encounter: within 21,000km from the planet - Renamed Pioneer Saturn, nicknamed Pioneer Rock Voyager I - revealed clouds, spots, new moons, craters, and ringlets - reached planet in November of 1980 - visited Jupiter first Voyager II - went to Saturn in the summer of 1981 - reached planet on August 25, 1981 - 3 seconds ahead of schedule; planned precisely - sent 10,000s of images Cassini - total cost: $3.27 billion
$2.6 billion from the US
$660 million from Europe - largest and most expensive probe - aimed at rings - size of a school bus PIONEER ROCK Quiz Time! Q: How are Saturn's rings labeled? A: Saturn's rings are labeled in letters in the order of discovery. True or False: Saturn would float in water. A: True Q: Why did Galileo call Saturn a "tri-form" planet? A: it was thought to be a system of 3 planets.