Extraterrestrial life

Two possibilities exist: either we are alone in the universe
or we are not. Both are equally terrifying.
Arthur C. Clarke

BibliographyGeneral
Ancient astronauts
Extrasolar planets
Life on Mars
UFO

General

SETI Institute
SETI
SETI League
Allen Telescope Array
Carl Sagan (1934-1996)

Extrasolar planets

Extrasolar Planets Encyclopedia

Life on Mars

NASA Mars missions

12 meteorites fell on the Earth from Mars. One of them was discovered 1984 and only recently (1996) scientists found traces of primitive life on it. The meteorite fell on Earth more than 13000 years ago and is called Allan Hills 84001 (Allan Hills is a place in the Antarctis where it has been found). The life form should be 3000000000 years old and seems to have been similar to terrestrian bacteria.

UFO

UFO Evidence
Ken's UFO page