Search for Extra-Terrestrial Life *

The search for extraterrestrial intelligence, often abbreviated to SETI, refers to attempts by astronomers to find evidence of intelligent life elsewhere in the Universe.

Since radio astronomy was first developed, in the early part of the twentieth century, searching for radio signals from deep space has been the primary method by which astronomers have attempted to identify the presence of extraterrestrial civilisations.

Originally, attempts focused on finding intelligent life on other planets within our solar system. Although it is still unknown whether life exists elsewhere in our solar system, the existence of intelligent life elsewhere in our solar system has been ruled out.

The Big Ear Radio Telescope

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The Wow! Signal

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Astronomy, Cosmology, Astrophysics and Space Exploration

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