Solar System

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Solar system

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  • Solar System

    1. 3. Earth
    2. 4. Atmosphere … Gives us the air we breathe
    3. 5. Protects us from meteorites and harmful cosmic radiation
    4. 6. Blanket covering the Earth from heat at day and cold at night
    5. 8. Bye-bye, Earth!
    6. 9. Hi Mercury!
    7. 10. Mariner 10: images of Mercury
    8. 11. 4.6 billion years ago: Heavy Bombardment
    9. 12. Barringer crater, Arizona 49,000 yr old Iron meteorite of size 50 m, mass 300,000 ton Impact velocity 11 km/sec Our Earth is a target, too!
    10. 13. 150 known impact sites on Earth Diameters from 50-70 m to 200 km
    11. 14. 65 million years ago a huge meteorite of 10 km size hit the Earth
    12. 16. <ul><li>World-wide fires </li></ul><ul><li>1-km-hign tsunamis </li></ul><ul><li>Acid rains and atmospheric pollution </li></ul><ul><li>Darkness and severe winter for many decades </li></ul>¾ of all living species have been killed
    13. 18. Our Moon could have been formed in a giant collision 4.5 billion years ago
    14. 20. The Peekskill meteorite October 9, 1992 12 kg stony meteorite hit the Earth
    15. 21. Venus the Beautiful
    16. 22. Venus - the brightest &quot;star&quot; The goddess of beauty
    17. 24. Venus and Earth - sister planets?
    18. 26. Flight over Venus
    19. 27. Fig. 17-3a, p.349 Greenhouse for trapping heat Runaway greenhouse effect
    20. 28. Atmosphere lets the visible sunlight in, but traps infrared radiation and prevents rapid cooling of the surface at nights
    21. 31. &quot;It will be possible to see cities on Mars, to detect navies in [its] harbors, and the smoke of great manufacturing cities and towns... Is Mars inhabited? There can be little doubt of it ... conditions are all favorable for life, and life, too, of a high order. Is it possible to know this of a certainty? Certainly.&quot; Samuel Leland 1895 Seasons on Mars? Channels for irrigation ???
    22. 32. Sorry, no channels – just dry canyons, lava flows and dusty deserts …
    23. 34. Dry riverbeds, traces of flooding
    24. 35. No water, just dry desert …
    25. 36. Salty rocks on Mars: former sea bottom
    26. 38. Journey to outer planets 8 billion miles through space!
    27. 39. Giant planets
    28. 40. Jupiter – the biggest planet
    29. 41. The Red Spot
    30. 43. Io Europa Ganymede Callisto Total 61 moons discovered so far Most are captured small asteroids Galilean moons:
    31. 45. Europa – a giant skating rink
    32. 47. Io – giant volcanoes
    33. 50. Saturn – second largest planet So fluffy – it could float in water
    34. 51. Enormous winds: 1800 km/hr !! The Great White Spot: huge storm
    35. 52. Thickness: less than 1 km Extend from 74,000 to 137,000 km Discovered by Huygens in 1659 Saturn rings
    36. 54. Flying through the rings
    37. 55. Titan, the mysterious moon of Saturn
    38. 57. Uranus
    39. 58. What happened to Miranda?
    40. 59. Neptune
    41. 60. Triton
    42. 62. Pluto and Charon
    43. 65. The Kuiper Belt – home for short-period comets?? Starting in 1992, astronomers have become aware of a vast population of small bodies orbiting the sun beyond Neptune. There are at least 70,000 &quot;trans-Neptunians&quot; with diameters larger than 100 km in the radial zone extending outwards from the orbit of Neptune (at 30 AU) to 50 AU.

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