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From Here to the Solar System

Space is big Space is dark It’s hard to find A place to park - Burma Shave. From Here to the Solar System. Each new step in the following diagrams is 100x larger than the previous diagram. 1 km 0.000003 light-second.

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From Here to the Solar System

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  1. Space is big Space is dark It’s hard to find A place to park - Burma Shave From Here to the Solar System Each new step in the following diagrams is 100x larger than the previous diagram.

  2. 1 km 0.000003 light-second

  3. 100 km 0.0003 light-second

  4. 10,000 km 0.03 light-second

  5. 1,000,000 km 3 light-seconds

  6. 100,000,000 km 5 light-minutes

  7. 10,000,000,000 km 8 light-hours

  8. 1 trillion km 30 light-days

  9. How did it get started? • Star formation proceeds from interstellar gas clouds • Many young stars have the kind of dusty surrounding disks that would make planets • Many nearby sunlike stars have at least giant planets • So the process is a frequent byproduct of starbirth

  10. Milky Way star-forming region NGC 3603

  11. Young stars in the Orion Nebula

  12. Gas disks Gas blown away Protoplanetary Dusty disk

  13. Leftovers: comets and other snowballs

  14. Outer solar system October 2003 With trans-Neptune iceballs

  15. The Big Rocks

  16. First question of planetary structure: how does its heat get out?

  17. Volcanoes and lava flows of four worlds

  18. Impact Craters • Explosion craters, not just gouges • Their number tells how old a surface is • Most on Earth have been erased by erosion and crustal movement

  19. Moons • Geologically active (for external reasons) • Possibly active • Formerly active • Dead rock and always been that way (the small ones)

  20. Io – as active as they come

  21. Mars, Europa, and… bugs

  22. Once and future Mars

  23. Sure, it’s cold and dry now – but do these look like the signs of a Permanently desert world?

  24. ?

  25. The next generation – launch of one of the two Mars Exploration Rovers (arriving year’s end)

  26. Europa

  27. We ain’t seen nothin’ yet! • Cassini orbiter en route to Saturn (arrival next June) with Huygens lander for Titan • Deep Impact full-contact comet probe • Messenger return to Mercury • Mars and more Mars • Jupiter Icy Moons Orbiter • Terrestrial Planet Finder

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