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So What All Is Out There, Anyway?

So What All Is Out There, Anyway?. The untold story of Alice’s Adventure in Wonderverse. She went on growing, and growing, and very soon had to kneel down on the floor: in another minute there was not even room for this. She looks down and sees Earth. The Moon comes into view.

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So What All Is Out There, Anyway?

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  1. So What All Is Out There, Anyway? The untold story of Alice’s Adventure in Wonderverse

  2. She went on growing, and growing, and very soon had to kneel down on the floor: in another minute there was not even room for this . . .

  3. She looks down and sees Earth

  4. The Moon comes into view

  5. Soon she can see the Sun . . .

  6. . . . and the other inner planets

  7. There’s the asteroid belt!

  8. The outer planets . . .

  9. . . . the Kuiper Belt . . .

  10. . . .and the Oort Cloudcomprise oursolar system

  11. The closest star, Proxima Centauri, is a red dwarf 4 light years (LY) away

  12. Other stars with planetary systems

  13. Our galaxy, the Milky Way, is ~100,000 LY across

  14. Clusters of galaxies: Our Local Group

  15. Clusters of galaxies: The Virgo Cluster

  16. Superclusters of galaxies

  17. Filaments of Superclusters

  18. Distance = Time Proxima Centauri is ~ 4 LY away. Light leaving star takes 4 years to arrive at Earth. Result: We see Proxima Centauri as it looked 4 years ago!

  19. The Sun 8 Minutes Ago

  20. The Andromeda Galaxy 2.2 million years ago

  21. NGC 1399, 65 Million Years Ago

  22. Just Suppose: • There is a planet in NGC 1399 • That planet is exactly like Earth • We could see that planet from Earth • What might we see?

  23. Abell 1825 13.2 billion years ago

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