Lectures (Video)
- 1. Introduction
- 2. Planetary Orbits
- 3. Our Solar System and the Pluto Problem
- 4. Discovering Exoplanets: Hot Jupiters
- 5. Planetary Transits
- 6. Microlensing, Astrometry and Other Methods
- 7. Direct Imaging of Exoplanets
- 8. Introduction to Black Holes
- 9. Special and General Relativity
- 10. Tests of Relativity
- 11. Special and General Relativity (cont)
- 12. Stellar Mass Black Holes
- 13. Stellar Mass Black Holes (cont)
- 14. Pulsars
- 15. Supermassive Black Holes
- 16. Hubble's Law and the Big Bang
- 17. Hubble's Law and the Big Bang II
- 18. Hubble's Law and the Big Bang III
- 19. Omega and the End of the Universe
- 20. Dark Matter
- 21. Dark Energy and the Accelerating Universe and the Big Rip
- 22. Supernovae
- 23. Other Constraints: The Cosmic Microwave Background
- 24. The Multiverse and Theories of Everything
Frontiers and Controversies in Astrophysics - Lecture 21
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Lecture 21 - Dark Energy and the Accelerating Universe and the Big Rip
Class begins with a review of the mysterious nature of dark matter, which accounts for three quarters of the universe. Different models of the universe are graphed. The nature, frequency, and duration of supernovae are then addressed. Professor Bailyn presents data from the Supernova Cosmology Project and pictures of supernovae taken by the Hubble Space Telescope. The discovery of dark energy is revisited and the density of dark energy is calculated. The Big Rip is presented as an alternative hypothesis for the fate of the universe.
Prof. Charles Bailyn
ASTR 160 - Frontiers and Controversies in Astrophysics, Spring 2007 (Yale University: Open Yale) http://oyc.yale.edu Date accessed: 2009-05-12 License: Creative Commons BY-NC-SA |
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