Are we alone in this vast sea of stars and galaxies? This has been a question we have been trying to answer, but still no conclusive evidence. Some say we are alone. Others say the universe is teaming with life. Although through SETI the SEARCH for EXTRATERRESTRIAL INTELLIGENCE there have been no intelligent signals from other civilizations. This does not mean they don’t exist. Or maybe we need a different method of trying to detect signals. Another question is, are the life forms of a lower form that can’t communicate with us? Through the discovery of other planets, there has been a renewed passion to find out the haunting question. Are we alone? We are on the threshold of finding other life elsewhere. Will it be microbial organisms under the surface of Mars? Or on some of the moons of Jupiter? Maybe some of the moons of Saturn? And beyond this we may be very close to finding possible signs of intelligent life on some of the planets orbiting other stars.