Notes

Slide Show

Outline

1	Chapter 18 Life In The Universe
2	We have already launched our first robotic spacecraft into interstellar space
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5	Matter/Antimatter Rocket Engines Fusion converts less than 1% of the mass of atomic nuclei into energy. Upper limits on speed may be ~ 0.10c. Matter-antimatter annihilation converts 100% of the particle mass into energy. Upper limits on speed may be ~ 0.90c!
6	Solar Sails and Beamed Energy
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8	Who’s doing research along these lines? Scientific Research - Research Projects
9	"Life In The Universe" Life In The Universe Are We Alone?
10	Radio Communication: Virtual Interstellar Travel We cannot travel at the speed of light, but we can send and receive radio waves and other electromagnetic waves at the speed of light. In this sense, we are virtual interstellar travelers.
11	The Search for Extraterrestrial intelligence (SETI) project This is a project in which scientists use large radio telescopes to search for radio signals from other civilizations. SETI Institute
12	A 210 ft radio telescope in New South Wales, Australia
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14	Urey-Miller Experiment (1953 –University of Chicago)
15	Murchison meteorite - 1969
16	Civilizations- How many are there within our own Milky Way Galaxy?
17	The Drake Equation
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19	R_* -rate of star formation averaged over the lifetime of the Galaxy f_p - fraction of those stars having planetary systems
20	n_e- average number of planets within those planetary systems that are suitable for life f_l– fraction of those habitable planets on which life actually arises.
21	f_i –fraction of those life bearing- planets on which intelligence evolves. f_c–fraction of those intelligent-life planets that develop technological societies.
22	L – average lifetime of a technologically competent civilization.
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24	Habitable Zones
25	End of Section