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Journey Through the Cosmos: Exploring Space's Wonders

Explore the vastness of space, from star formation to planetary structures and missions like Cassini and Mars Exploration Rovers. Delve into the mysteries of distant worlds and celestial bodies. Join the cosmic adventure now!

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Journey Through the Cosmos: Exploring Space's Wonders

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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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