Lo 11-ss-innerplanets

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Lo 11-ss-innerplanets

  1. 1. MercuryMercury
  2. 2. MercuryMercury assembled by images from Mariner 4 (1974)assembled by images from Mariner 4 (1974)
  3. 3. VenusVenus
  4. 4. Venus’ Runaway GreenhouseVenus’ Runaway Greenhouse EffectEffect Atmosphere:Atmosphere: Thick -90 barsThick -90 bars CO2CO2 Some N, othersSome N, others Temp: 730KTemp: 730K = 850 F= 850 F
  5. 5. Venus ExplorationVenus Exploration Fly-bys since 1962Fly-bys since 1962 Probes since 1970Probes since 1970 Orbiters since 70’s –Orbiters since 70’s – use radar studiesuse radar studies Magellan – VenusMagellan – Venus orbiter - 1989orbiter - 1989
  6. 6. The Atmosphere of VenusThe Atmosphere of Venus Venus – albedo = 80%Venus – albedo = 80% Clouds – Sulfuric AcidClouds – Sulfuric Acid
  7. 7. Geology of VenusGeology of Venus 500 MA – Intense500 MA – Intense VolcanismVolcanism Rolling plains with 2Rolling plains with 2 highland areashighland areas Visible volcanicVisible volcanic depositsdeposits Torn crust, ridges andTorn crust, ridges and crackscracks  TectonicTectonic ForcesForces
  8. 8. MarsMars The Red PlanetThe Red Planet
  9. 9. StatisticsStatistics 1.5 AU from Sun1.5 AU from Sun Orbit: 687 earth-daysOrbit: 687 earth-days Rotation: 24.5 hoursRotation: 24.5 hours Color: Reddish (iron in soil)Color: Reddish (iron in soil) Density: lowDensity: low Diameter = half of Earth’sDiameter = half of Earth’s Magnetic Field – noneMagnetic Field – none
  10. 10. Cratered Surface of MarsCratered Surface of Mars Cratering Period from 3 – 4 GACratering Period from 3 – 4 GA
  11. 11. Water on MarsWater on Mars
  12. 12. Mars’ VolcanoesMars’ Volcanoes Olympus MonsOlympus Mons
  13. 13. Tharsis AreaTharsis Area
  14. 14. Valles MarinerisValles Marineris 5000 km long5000 km long Formed by pressure from belowFormed by pressure from below Shaped by water and windShaped by water and wind
  15. 15. Mars’ SurfaceMars’ Surface Iron in soilIron in soil Why not in core?Why not in core?
  16. 16. Atmosphere of MarsAtmosphere of Mars
  17. 17. Storms on MarsStorms on Mars Dust Storm and Cyclonic StormDust Storm and Cyclonic Storm
  18. 18. Satellites of MarsSatellites of Mars Phobos and DeimosPhobos and Deimos
  19. 19. Life on Mars?Life on Mars?
  20. 20. Exploration of MarsExploration of Mars Fly-bys since 1965Fly-bys since 1965 Orbiter in 1971Orbiter in 1971 Viking 1 and Viking 2Viking 1 and Viking 2 – Landed in 1976– Landed in 1976 Rovers Spirit andRovers Spirit and Opportunity – stillOpportunity – still goinggoing

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