Exoplanets

This book covers the topics of the existence of planets around others stars, that could possible harbor life. In addition, it covers the search for extraterrestial life in our own solar system. We only have to find life other than ours once, and the door is open. We think now we are unique in the Universe., but the Universe is very large. We still find strange life forms on Earth, like the extremeofils deep under the sea, feeding off volcanic vents. We're not looking hard enough, and can't see far enough to write off the possibility of alternate life in the Universe. One of the more exciting missions is the search for planets of other stars than our own sun. Although there are nearly impossible to image directly, they can be observed as the pass through our line of sight with the distant star, and cause a small dip in the perceived brightness. Exo-planets are best seen from space.