The Search for Extraterrestrial Intelligence. E.T. phone home using 10-10-220. Goals. How likely is intelligent life in the Universe? How can we find out if there is? How could we communicate with it? Should we?. Life in the Universe.
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E.T. phone home using 10-10-220
N = Number of communicating civilizations in our galaxy right now.
And what about the rest?
R* = 100 billion stars/10 billion years
R* = 10 */year
We have made three attempts to communicate.
2. The Pioneer 10 and 11 plaques.
Pioneer 10 is now 12 billion km from Earth – 80 AU 11.3 light hours!
3. Voyagers 1 and 2 contain a plaque and a record.
Credit – Voyager 1990