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Astronomy!

Astronomy!. Emily Cunningham Institut d’Astrophysique de Paris. What do astronomers study?. 1. Planets. 2. Stars. SUPERNOVA! (NASA). BLACK HOLE!. Image: NASA. 3. Galaxies. Andromeda Galaxy (M31). Image: NASA. 4. Clusters of Galaxies. Abell Cluster of Galaxies. Image: NASA.

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Astronomy!

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  1. Astronomy! Emily Cunningham Institutd’Astrophysique de Paris

  2. What do astronomers study?

  3. 1. Planets

  4. 2. Stars SUPERNOVA! (NASA) BLACK HOLE! Image: NASA

  5. 3. Galaxies Andromeda Galaxy (M31). Image: NASA

  6. 4. Clusters of Galaxies Abell Cluster of Galaxies. Image: NASA

  7. 5. The Universe: Cosmology

  8. How do astronomers study the universe?

  9. How do astronomers study? • Observations: Telescopes • Theory: Computer Simulations and Models

  10. Observations • Ground-Based Kitt Peak National Observatory, Arizona, United States

  11. Observations • Ground-Based Keck Telescopes: Mauna Kea, Hawaii, United States

  12. Observations 2. Space-Based Hubble Space Telescope (HST)

  13. Thierry Cohen, www.newyorktimes.com

  14. Thierry Cohen, www.newyorktimes.com

  15. 2. Theory: Computer Simulations!

  16. The Speed of Light • Speed of light: c = 3.00 x 108 m/s • Because light has a finite speed, the light that reaches us from distant objects was emitted many (i.e. millions or billions) years ago • This means, in astronomy, looking far away is the same as looking back in time!

  17. Night vision goggles can see infrared! X-rays pass through your skin but not your bones!

  18. Pinwheel Galaxy: Visible Light (Hubble Space Telescope)

  19. Pinwheel Galaxy: Infrared (Spitzer Space Telescope)

  20. Pinwheel Galaxy: X-Rays (Chandra X-Ray Observatory)

  21. Pinwheel Galaxy: Infrared + Visible + X-ray

  22. Elliptical Galaxies

  23. Image: Hubble Space Telescope

  24. Image: Hubble Space Telescope

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