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The PlanetsA Quick Tour, With Lots of Pictures!
We are here!
Start With Swirling Gas & Dust    Started about 4.6 billion years ago    Gravity starts to pull it into a disc.    Sun ...
The Sun    Holds the solar system together    (gravity!)    Contains over 99% of the solar    systems mass (“stuff”)   ...
Solar eruption, 12/31/2012 See the video at: http://www.nasa.gov/mission_pages/sdo/news/solar-ballet2.html
Comparing the PlanetsHow far apart are they? See:http://www.northern-stars.com/solar_system_distance_scal.htm
Mercury    Closest planet to the sun (29-43 million miles)    Hot on one side (800 degrees), cold on the other (-290 deg...
Venus    HOT! 880 degrees    “Super dense atmosphere: carbon dioxide, nitrogen, sulfuric    acid.    Just a little smal...
Double Vortex    Looks like two hurricanes right next to each other!    Located at Venus north pole
Venus Transit of 2012    http://player.vimeo.com/video/43696319
Earth: You know this place!    About 93 million miles from the sun    Our atmosphere and magnetic field keep us safe fro...
How we got the moon (maybe)    “Giant impactor theory”
Mars    Averages 143 million miles from the Sun    About ½ as large as Earth    Thin atmosphere, very cold!    “Rusty,...
Cool stuff on Mars    Olympus Mons (the largest volcano in the solar    system!)
Vallis Marinaris    Giant canyon    2500 miles long, 310 miles wide, 4 miles deep    10 times longer    3 times deeper ...
Polar Ice Caps
Jupiter• The largest planet: 1300 times larger than earth!• About 480 million miles from the sun• First of the gas giants—...
Comet impact (1994)
Saturn• Second largest planet• About 885 million miles from the sun• Rings! Made mostly of ice, 3/5 mile thick.• Comets, a...
Rings: Close up
Uranus• “Tipped over” in its orbit (hit by a planet?)• About 1.8 billion miles from sun• 63 times larger than earth• Blue ...
Neptune• About 2.8 billion miles from the sun• Also blue from methane• 1 year = 164 years• 1 day = 16 hours• COLD: -353 de...
Great Dark Spots• Storms, like Jupiter’s  Great Red Spot• Dont last as long as the  GRS
What about Pluto?
Dwarf PlanetsCeres, Pluto, Eris, Makemake andHaumeaDont quite make it as full “planetsMay Ceres, Pluto, Eris, Makemake and...
More Infohttp://solarsystem.nasa.gov
Planets
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Planets

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Planets

  1. 1. The PlanetsA Quick Tour, With Lots of Pictures!
  2. 2. We are here!
  3. 3. Start With Swirling Gas & Dust Started about 4.6 billion years ago Gravity starts to pull it into a disc. Sun forms at the middle Planets pull together in orbits “Wind” from the sun blows out most of whats left. You’ve got a solar system! (100 million years or so)
  4. 4. The Sun Holds the solar system together (gravity!) Contains over 99% of the solar systems mass (“stuff”) Runs on nuclear fusion Has solar flares, coronal mass ejections Core: 27 million degrees Surface: 10,000 degrees Corona: 3.5 million degrees
  5. 5. Solar eruption, 12/31/2012 See the video at: http://www.nasa.gov/mission_pages/sdo/news/solar-ballet2.html
  6. 6. Comparing the PlanetsHow far apart are they? See:http://www.northern-stars.com/solar_system_distance_scal.htm
  7. 7. Mercury Closest planet to the sun (29-43 million miles) Hot on one side (800 degrees), cold on the other (-290 degrees) Slightly larger than our moon Almost no atmosphere, but there is ice! 1 day there = 58.7 earth days 1 year there = 88 earth days 50 lb kid here = 19 lbs there
  8. 8. Venus HOT! 880 degrees “Super dense atmosphere: carbon dioxide, nitrogen, sulfuric acid. Just a little smaller than Earth. Spins backwards! The sun rises in the west, sets in east 50 lb kid on Earth = 45.5 lbs there. One year there = 243 days here One day there = 117 days here Landers last about 2 hours--then the atmosphere destroys them! http://www.planetary.org/explore/space-topics/space-missions/missions-to-venus-m
  9. 9. Double Vortex Looks like two hurricanes right next to each other! Located at Venus north pole
  10. 10. Venus Transit of 2012 http://player.vimeo.com/video/43696319
  11. 11. Earth: You know this place! About 93 million miles from the sun Our atmosphere and magnetic field keep us safe from solar wind, radiation, etc. 1 year = 365.25 days 1 day = 23.93 hours Weve got a moon!
  12. 12. How we got the moon (maybe) “Giant impactor theory”
  13. 13. Mars Averages 143 million miles from the Sun About ½ as large as Earth Thin atmosphere, very cold! “Rusty,” surface makes it look red Two moons (captured asteroids?) Craters, volcanoes, ice (used to have rivers/oceans?) Lots of rovers/landers: Curiosity is the most recent
  14. 14. Cool stuff on Mars Olympus Mons (the largest volcano in the solar system!)
  15. 15. Vallis Marinaris Giant canyon 2500 miles long, 310 miles wide, 4 miles deep 10 times longer 3 times deeper than the Grand Canyon! Thought to have been made by “rift faults,” possibly deepened by flowing water.
  16. 16. Polar Ice Caps
  17. 17. Jupiter• The largest planet: 1300 times larger than earth!• About 480 million miles from the sun• First of the gas giants—mostly hydrogen & helium (may have a solid core)• Intense weather! Red spot = 300 year-old storm!• 63 moons• Very thin rings• 1 year=almost 12 earth years• 1 day = about 10 hours• 50 pound kid would weigh 125 pounds!
  18. 18. Comet impact (1994)
  19. 19. Saturn• Second largest planet• About 885 million miles from the sun• Rings! Made mostly of ice, 3/5 mile thick.• Comets, asteroids & broken-up moons• 53 moons•
  20. 20. Rings: Close up
  21. 21. Uranus• “Tipped over” in its orbit (hit by a planet?)• About 1.8 billion miles from sun• 63 times larger than earth• Blue because of methane gas• Pretty cold: -357 degrees!• 50 lb kid = 45 lbs on Uranus• 27 moons, very thin rings
  22. 22. Neptune• About 2.8 billion miles from the sun• Also blue from methane• 1 year = 164 years• 1 day = 16 hours• COLD: -353 degrees• 50 lb kid = 57 lbs
  23. 23. Great Dark Spots• Storms, like Jupiter’s Great Red Spot• Dont last as long as the GRS
  24. 24. What about Pluto?
  25. 25. Dwarf PlanetsCeres, Pluto, Eris, Makemake andHaumeaDont quite make it as full “planetsMay Ceres, Pluto, Eris, Makemake and Haumea. be over 100!
  26. 26. More Infohttp://solarsystem.nasa.gov

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