Copernicus, Galileo, and Kepler:Redefining Our Place in the UniverseOctober 2 and 3, 2009Herbst Theatre, San FranciscoPanel Discussion with all presenters and written questions from the audience.
Presenter: Alex Filippenko (Astronomy, UC Berkeley).Observations of very distant exploding stars (supernovae) show that the expansion of the Universe is now speeding up, rather than slowing down as would be expected due to gravity. Other, completely independent data strongly support this amazing conclusion. Over the largest distances, our Universe seems to be dominated by a repulsive "dark energy," stretching the very fabric of space itself faster and faster with time. The physical nature of d...
Presenter: George Hammond (SF Attorney and Author).George Hammond impersonates Copernicus, wryly commenting on the "hot ideas" of 21st Century cosmology, dismissing those that look like "yet another epicycle dead end" and passionately predicting those that will lead to the next Copernican Revolution.
Presenter: Geoff Marcy (Astronomy, UC Berkeley). Science fiction assumes that our Milky Way Galaxy abounds with habitable planets populated by advanced civilizations engaged in interstellar commerce and conflict. Even Kepler wrote a science-fiction work about travelling in the solar system. Back in our real universe, Earth-like planets and alien life have proved elusive. Has science fiction led us astray? This year, astronomers launched the first searches for Earth-like worlds around other sta...
Recap of Friday and Introduction of Saturday Program (Patricia Lundberg).Presenter: Paula Findlen (History, Stanford University).In 1609 an Italian mathematics professor, Galileo Galilei, devised a telescope based on reports of a spyglass that could magnify things at a distance. He turned it on the heavens and saw things no one had ever seen before: the imperfections of the moon's surface, the composition of the Milky Way, and the hitherto unknown satellites of Jupiter. Galileo's report of the...