Searching for Extraterrestrial Intelligence
Signals
Short anomalous signal received by a radio telescope in 1977.
Signal detected using the SETI@home project.
Scale to determine the significance of any received transmissions.
Scale to estimate the probability of a signal from Earth being detectable by extraterrestrials.
Technology
Scale estimating the level of technology posessed by a civillisation.
If the universe is teeming with life... "Where is everybody?"
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