Lecture Description
November 01, 2010
SETI Archive: seti.org/talks
The U.S. Navy is developing a Free Electron Laser with MW-level average output power, as reported in a recent National Academy Report.* Several scientific space applications appear to be interesting and feasible, including power beaming to satellites, space stations, or space vehicles. New proposals also include scientific investigation of the moon and nearby planets using an FEL stationed on earth, but capable of illuminating small areas of these objects with light spectrally brighter than the sun, permitting direct observations at tunable, selectable wavelengths. It also appears possible to use such an FEL to send detectable signals out to 50 light-years or more, conceivably providing communications capability across such distances. Invoking the concept of reciprocity, it could be we should be looking for such signals from intelligent civilizations on exoplanets. A plan for such exploration is suggested.
* Scientific Assessment of High-Power Free Electron Laser Technology, National Academy of Sciences, Board on Physics and Astronomy Report (2009)
Course Index
- Dale Cruikshank: Outer Solar System Ices
- Adrian Brown: Poles of Mars
- Bruce Damer: Simulating Life's Origin
- Laurance Doyle: Mongolian and other Historic Solar Eclipses
- Daniel Rasky: Augustine Commission - The Way Forward on US Manned Spaceflight
- Sergei Dubovsky: Observing String Multiverse with Astrophysical Black Holes
- Conny Aerts - Asteroseismology
- Carol Stoker - Phoenix Mission and Habitability
- ames Benford - Interstellar Beacons
- Brad Bailey - Life in Basaltic Glass in the oceanic basins
- Nancy McKeown: Mawrth Vallis, Mars
- Bob Pappalardo: Europa Jupiter Orbiter
- David Jewitt:- Solar System Primordial Ice Reservoirs
- Harry Jones: Starship Life Support
- Jeff Moore: Mysteries on Titan
- Farid Salama: Interstellar Clouds
- Mark Showalter: Marine Biodiversity
- Jen Blank: ChemCam on Mars Science Lab Rover
- Pete Worden, Pavel Podvig, Will Marshall: Nuclear Weapons and Space Weapons
- Samantha Blair: Interstellar Medium Interference
- Jon Jenkins: Kepler Worlds
- Dan Lubin: Maunder Minimum
- Monika Kress: Habitable Planets
- Intersection of Physics and Biology - Jan Liphardt
- Mark Marley: Atmospheres of Brown Dwarfs and Exoplanets
- Sarah Church: Polarized Cosmic Microwave Background
- Peter Jenniskens: Hayabusa Reentry
- Don Lowe: Late Heavy Bombardment
- Mark Krumholz: Star Formation Rate
- Heather Knutson: Exoplanet Atmospheres
- David Des Marais: Exploring Mars for Habitable Environments
- Ralph Lorenz: Titan Unveiled
- REU Students Review 2010
- Nick Kanas: Psychology of Spaceflight
- Rus Belikov: Beyond Kepler - Imaging Exo-Earths
- Bill Colson: Free Electron Laser Communications
- David Korsmeyer: NASA Future Human Missions
- Pascal Lee: Haughton-Mars Project
- Chris McKay: Titan - Past, Present, Future
- Nathalie Cabrol: Lakes on Mars
- Margarita Marinova: Martian Dichotomy
- Ellen Howell: Radar videos of asteroids
Course Description
Carl Sagan Center/SETI Institute Colloquium Series
Attend a colloquium! They are FREE, open to the public and held from noon to 1pm, every Wednesday at the SETI Institute, 515 N. Whisman Road, Mountain View, California.