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Lecture 26 - Final Exam Wednesday May 12 4:00 5:30 pm...

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Final Exam Wednesday May 12 4:00 – 5:30 pm Physics Lecture Hall Closed book and notes Computer-graded multiple-choice questions Material covered: Text chapters 23 - 28 Lectures 15-27 (March 9 through April 29) Bring Student ID card and a #2 pencil Practice Exam on class web page soon
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Extra Credit Submit multiple-choice questions for final exam (with 5 answer choices). Email submission preferred Deadline: 5 pm Friday, April 30 Accepted questions replace low quiz and class participation scores– up to 1 quiz and 2 class scores replaced
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Previous Lecture Future of expansion classical: 3 solutions – open, flat, closed current: accelerating dark-energy driven CMB power spectrum sound waves at time of recombination constrains amount & type of dark matter Concordance cosmology Fate of universe: accelerating expansion
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Are We Alone? Is there life elsewhere in the Solar System?
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Aliens on Earth “Evidence” UFO’s Crop Circles Area 51 Giant Drawings Many hoaxes Unlikely
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Intelligent Life in Solar System Humans have transformed the Earth strong emissions in optical, infrared, and radio pulsed with 24-hour period (cities) post-industrial revolution atmosphere chemistry No such signs elsewhere in solar system Other intelligent life-forms unlikely
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Life Elsewhere?
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