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Astronomy 141 - Life in the Universe
Richard Pogge
47 episodes
9 months ago
Welcome to the Astronomy 141 Lecture Podcasts. This is a brief message from me explaining the podcasts, and welcoming new and old listeners. University. Lectures will begin on Wednesday, 2009 Sept 23, and run through Friday, 2009 Dec 4. New lectures will appear shortly before 6pm US Eastern Time each day there is a regular class. Recorded live on 2009 Sep 23 in Room 1005 Smith Laboratory on the Columbus campus of The Ohio State University.
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Courses
Education,
Science,
Natural Sciences,
Astronomy
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All content for Astronomy 141 - Life in the Universe is the property of Richard Pogge and is served directly from their servers with no modification, redirects, or rehosting. The podcast is not affiliated with or endorsed by Podjoint in any way.
Welcome to the Astronomy 141 Lecture Podcasts. This is a brief message from me explaining the podcasts, and welcoming new and old listeners. University. Lectures will begin on Wednesday, 2009 Sept 23, and run through Friday, 2009 Dec 4. New lectures will appear shortly before 6pm US Eastern Time each day there is a regular class. Recorded live on 2009 Sep 23 in Room 1005 Smith Laboratory on the Columbus campus of The Ohio State University.
Show more...
Courses
Education,
Science,
Natural Sciences,
Astronomy
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Lecture 37: Strange New Worlds
Astronomy 141 - Life in the Universe
46 minutes 50 seconds
15 years ago
Lecture 37: Strange New Worlds
What are the properties of the 400+ exoplanets we have discovered so far? This lecture reviews the properties of exoplanets, and finds a couple of surprises: Jupiter-mass planets orbiting close to their parent stars, and Jupiter-mass planets in very elliptical orbits. Both seem to require some mechanism for migration: strong gravitational interactions with either the protoplanetary disk or other giant planets to cause the planets to move inward from their birth places beyond the "Ice Line". We will then briefly discuss why we are seeing systems very different from our own, mostly we think a selection effect due to our search methods to date. Microlensing, however, is more sensitive to systems like ours, and is starting to find them. Earths, however, remain elusive so far, but the hunt is on. Recorded live on 2009 Nov 18 in Room 1005 Smith Laboratory on the Columbus campus of The Ohio State University.
Astronomy 141 - Life in the Universe
Welcome to the Astronomy 141 Lecture Podcasts. This is a brief message from me explaining the podcasts, and welcoming new and old listeners. University. Lectures will begin on Wednesday, 2009 Sept 23, and run through Friday, 2009 Dec 4. New lectures will appear shortly before 6pm US Eastern Time each day there is a regular class. Recorded live on 2009 Sep 23 in Room 1005 Smith Laboratory on the Columbus campus of The Ohio State University.