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Understanding the Electromagnetic Spectrum in Astronomy

Explore the different parts of the electromagnetic spectrum and its impact on our daily lives. Discover NASA's astrophysics observatories and techniques, as well as the tools used for multiwavelength astronomy.

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Understanding the Electromagnetic Spectrum in Astronomy

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  1. EM Spectrum and Multiwavelenth Astronomy Pamela Harman NASA SOFIA EPO SETI Institute Mountain View, CA pharman@seti.org

  2. Agenda • EM Spectrum Review • NASA Astrophysics Observatories, techniques, images • Visible Spectra, IR demo, UV beads • Resources • PPT and Resource Word doc http://www.sofia.usra.edu/Edu/materials/presentations.html

  3. The Electromagnetic Spectrum Our eyes see only part of the electromagnetic spectrum…

  4. “Invisible” Light in Society Each part of the spectrum impacts our daily lives… UV Sunscreen Communications Microwave ovens Remote controls X-rays

  5. NASA SMD Astrophysics: Discover the origin, structure, evolution, and destiny of the universe, and search for Earth-like planets

  6. The Tools of Our Search We collect light from distant objects, and bring together researchers from many disciplines.

  7. Stratospheric Observatory For Infrared Astronomy (SOFIA)

  8. Chandra X-ray telescope • http://chandra.harvard.edu/photo/

  9. NASA Resources

  10. Representative Color

  11. “Invisible” Light in Astronomy Each part of the spectrum provides a piece of the puzzle in understanding our universe.

  12. The Pinwheel Galaxy http://hubblesite.org/newscenter/archive/releases/2009/07

  13. Galaxies: How Do They Form and Evolve? Ellipticals Spirals Huge collections of stars, gas, and dust held together by gravity… Irregulars

  14. M82: A Burst of Star Formation Infrared Visible X-Ray

  15. Centaurus A Infrared Visible X-Ray

  16. Looking Back in Time To find the earliest galaxies, we will need to explore the universe in the infrared.

  17. The Lives of Stars

  18. The Orion Nebula Infrared Visible X-Ray

  19. Our Place in the Universe

  20. Spectra = Signatures

  21. Active Astronomy Lessons Compare and contrast visible & infrared light 1. Overview and pre-test 2. What’s getting through to you? gel filters 3. Seeing the Invisible detector circuits 4. Reflection of Visible and Invisible mirrors and detector circuits 5. Listening to Light detector and transmitter circuits

  22. Visible vs Infrared Images

  23. Resources • SOFIA Active Astronomy • http://www.sofia.usra.edu/Edu/materials/activeAstronomy/activeAstronomy.html • SEEK and FLIR smart phone IR cameras • ASP AstroShop Noel EncarnacionInventory and Customer Service Managerservice@astrosociety.org • PPT and Resource Word doc http://www.sofia.usra.edu/Edu/materials/presentations.html

  24. Resources • Stanford Solar Center Spectrascopes and Colors of the Sun video (high school for power supply and gas tubes) • http://solar-center.stanford.edu/ • Project Spectra • http://lasp.colorado.edu/home/education/k-12/project-spectra/ • NASA Tour of the EM Spectrum • http://missionscience.nasa.gov/ems/index.html

  25. Sponsors for today’s talk • NASA’s SOFIA (Stratospheric Observatory for Infrared Astronomy) Mission • SETI Institute, Mountain View, CA

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