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~Solar System~ Kelly Huson EDU-370 Inner Solar System Terrestrial or Rocky Planets Outer Solar System Gas Planets Gas/Dust cloud collapses and compresses in center Forming star with orbiting gas that forms an accretion disk First Break Point

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solar system

~Solar System~

Kelly Huson

EDU-370

inner solar system
Inner Solar System

Terrestrial or Rocky Planets

origin of the solar system
Gas/Dust cloud collapses and compresses in center

Forming star with orbiting gas that forms an accretion disk

First Break Point

Gas cools off and particles form

Run away growth

Second Break Point

“Planetesimals”

Current Solar System

‘Origin’ of the Solar System
mercury
Mercury
  • Mercury is the closest planet to the Sun and the eighth largest.
  • Its orbit is highly eccentric
  • It is the only body in the solar system known to have an orbital/rotational resonance with a ratio other than 1:1
  • Temperature variations are the most extreme in the solar system ranging from 90 K to 700 K.
  • Mercury is the second densest major body after Earth
  • It has a very thin atmosphere consisting of atoms blasted off its surface by the solar wind.
venus
Venus
  • Venus' rotation is very slow and retrograde
  • Earth’s sister planet, their densities and chemical compositions are similar
  • Venus is only slightly smaller than Earth, 95% of Earth's diameter & 80% of Earth's mass
  • It is composed mostly of carbon dioxide with thick layers of clouds composed of sulfuric acid.
  • This dense atmosphere produces the Greenhouse Effect
  • Actually hotter than Mercury
  • High Volcanic Activity
slide10
Mars
  • Called the Red planet
  • Orbit very elliptical
  • Seventh Largest
  • Same surface area as Earth, but overall much smaller
  • Varied terrain-between north & south hemispheres
  • No lateral plate motion
  • Very thin atmosphere
  • Early in its history it was much like Earth
jupiter
Jupiter
  • 5th Planet, Largest
  • Gas planet: 90% H % 10% He
  • 3 distinct layers of clouds
  • High velocity winds
  • Radiates more energy than receives from the sun
  • Huge Magnetic Field
  • Has rings-continually resupplied
  • 63 know satellites
saturn
Saturn
  • 6th Planet, 2nd Largest Planet
  • Least dense of the planets
  • Gas planet - 75%H and 25%He
  • Radiates more energy than receives from sun
  • Thin rings composed of small particles & ice
  • Significant magnetic field
  • 34 named satellites
uranus
Uranus
  • 7th Planet , 3rd Largest
  • First planet discovered in modern times
  • Axis almost parallel to the ecliptic
  • Poles are in unusual location
  • Composed of rock and various ices
  • Bands of rapidly moving faint clouds
  • Blue in color
  • Has 11 rings
  • Has 27 moons
neptune
Neptune
  • 8th sometimes 9th Planet due to eccentric orbit
  • Similar composition to Uranus
  • Gas planet with rapid winds fastest in solar system
  • Has 4 rings
  • Oddly oriented magnetic field
  • Has 26 known moons
pluto
Pluto
  • Usually furthest from Sun
  • Smallest Planet, smaller than some moons
  • Only planet not visited
  • Discovered on accident
  • Has satellite - Charon
  • Highly eccentric orbit with 3:2 resonance with Neptune
  • Equator almost at right angle with orbit (like Uranus)
  • Little known about atmosphere