1. I have read science fiction books I was 13.

2. more than a century, that is the publication of "The War of the Worlds" in 1898, E.Ts have been a major topic in literature.

3. The SETI Institute has worked on Extra-Terrestrial Intelligence more than 40 years.

4. They claim that the Universe has existed some 15 billion years.

5. the creation of the Institute, they have never had proof of extraterrestrial existence.

6. However, they have looked for radio signals many years ... unsuccessfully so far !

7. they started working on the project, scientists have assumed the aliens were technologically more advanced than we are.