PRO	CON	WHAT DO YOU THINK?
Some scientist have set up a program called SETI (Search for Extraterrestrial Intelligence). They believe that there is alien life and UFOs. One of the reasons they believe this is because Universe is very large and we, the humans, have not been outside our own galaxy. It is possible that in some other galaxy of the Universe there is life. The SETI people set up radio transmission to listen in the space. So far they heard nothing, but they are still trying. On their web page at www.seti.org, you can download SETI program and join them in search for aliens.	Other scientist believe that life is not possible in space because there is not enough oxygen to breathe and most of the planets are made of gas or have no water. Also, no one could ever prove that they saw UFOs or aliens. It might have been just a falling star or a plane.