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The Origin of Stars, Planets, and Life in the Universe

The Origin of Stars, Planets, and Life in the Universe. Dr. Matt Bobrowsky mattb@stsci.edu. Poll Question:. Do you think there is life  even just primitive forms of life  on other worlds?. Do you think there is intelligent life on other worlds?. The Electromagnetic Spectrum.

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The Origin of Stars, Planets, and Life in the Universe

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  1. The Origin of Stars, Planets, and Life in the Universe Dr. Matt Bobrowskymattb@stsci.edu

  2. Poll Question: Do you think there is life  even just primitive forms of life  on other worlds?

  3. Do you think there is intelligent life on other worlds?

  4. The Electromagnetic Spectrum

  5. Use a stamp “X” to select the most abundant element in the universe.

  6. Axis of rotation Approx. 1 light year Axis of rotation Rotation retards collapse in this direction Gravity makes cloud shrink. As it shrinks it spins caster and flattens into a disk with central bulge. Slowly spinning interstellar cloud Approx. 100 AU

  7. Where did we come from? Are we alone? Big Questions in Science Questions about origins: Other astrobiology questions: How did life on Earth form? Should we expect life on many other worlds? Is life on other worlds like life on Earth? How can we detect life elsewhere?

  8. Poll Question: What chemical elements were created by the Big Bang?

  9. The Life Cycle of Stars…

  10. CH4 H2 H2O NH3

  11. Put a stamp on the most abundant element in life on Earth.

  12. H He O C N The Most Abundant Chemical Elements  in the Universe and in Life In the Universe In Life • H • O • C • N

  13. Life on Earth is carbon-based. Life on Earth requires liquid water The amino acids in life are easily formed. A few facts about Life on Earth

  14. First find planets. One way uses the Doppler Effect. Finding Life

  15. Another way to find planets is to look for transits.

  16. Kepler Terrestrial Planet Finder

  17. Seasonal changes Unusual abundances of gases Gases produced by life Unusual patterns of electromagnetic radiation (e.g., radio or TV broadcasts, the nighttime glow of cities) Signs of Life (not yet possible to detect with current technology)

  18. We have learned an enormous amount about the origins of stars and planets. We are just starting to learn about life in the universe. These explorations require a team effort involving scientists from many disciplines. There is still much more to explore. Your students will be able to make discoveries and help us learn even more! Summary

  19. NASA’s Navigator Missions: http://planetquest.jpl.nasa.gov/ Origins Education Forum: http://origins.stsci.edu/

  20. Poll Question: Do you think there is life  even just primitive forms of life  on other worlds?

  21. Do you think there is intelligent life on other worlds?

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