Lecture 26 - Astro Nova ESAs Herschel infrared space...

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Astro Nova ESA’s Herschel infrared space telescope assembled Mars rover Opportunity has motor trouble Polaris’ cepheid pulsations increasing had been fading for a century doubled over last 4 years Hubble Space Telescope’s 18 th birthday April 25
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Final Exam Wednesday May 14 9:00 am – 10:30 am Physics Lecture Hall Closed book and notes Computer-graded multiple-choice questions Material covered: Text chapters 22 - 27 Lectures 15-27 (March 13 through May 1) Bring Student ID card and a #2 pencil Practice Exam on class web page soon
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Makeup Final Exam Monday May 12, noon – 1:30 pm SEC 203 Only for those with verified exam conflicts or Dean’s notes
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Extra Credit Submit multiple-choice questions for final exam (with 5 answer choices). Email submission preferred Deadline: 5 pm Monday, May 5 Accepted questions replace low quiz scores with perfect scores – up to 2 quizzes replaced
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Previous Lecture Inflation addresses: matter/antimatter problem seeds of galaxy structure horizon/uniformity problem flatness problem CMB power spectrum Fate of universe: accelerating expansion
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Quiz Question #1 What is the Horizon Problem in cosmology? A. The horizon of the universe looks flat, just like the Earth’s horizon, but we know that it should be curved. B. We can’t observe beyond the cosmological horizon, and thus can’t know all of the universe. C. The cosmological horizon is too small to enclose all the large scale structure that we observe in the universe. D. The cosmic background radiation is too uniform in different directions on the sky. E. The total density of the universe gives = 1, and there is no reason for this.
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Quiz Question #2 What produced the CMB power spectrum that we observe today? A. Pressure waves in the early universe before recombination B. Gravity waves made when the first generation of stars exploded as supernovae C. Gravitational lensing by clusters of galaxies D. The process of inflation in the early universe E. The harmony of the spheres, first discovered by Kepler
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Lecture 26 - Astro Nova ESAs Herschel infrared space...

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