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.
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