ASTR 1102 Lecture : Lecture39
Document Summary
Improbable in dense environment - other stars disrupt planet formation. The solar system took 4. 6 billion years to produce intelligence. Short-lived stars (o, b, a, perhaps f) may not survive long enough. Planets likely to have more complex orbits large temperature variations. Look at single, isolated, middle-aged, population i, g, k, maybe m stars. Preferably stars like the sun - solar-type stars. At this point you should be suspicious . Only optical and radio (and some ir) easily penetrate atmosphere. In 1992 congress forbade nasa from performing radio seti. Project phoenix: 1000 solar-type stars within 200 light years. Others run by harvard, university of california, university of western. A few million in the coming two decades as we extend our search to a distance of approximately 1000 light years - seth shostak, seti. Solution: use world"s idle pcs as huge supercomputer http://setiathome. berkeley. edu/ Runs as a screensaver when computer is idle. Analyzes data from arecibo radio telescope, puerto rico.
