Extraterrestrial Life

You can find all sorts of topics on extraterrestrial life.  This can include people's theories based on assumptions and guesses (Area 51) or theories based on actual observations (you know, science).  

You will focus on the theories that are based on sound logic that is based on scientific evidence.

Be sure to include at least the following:

• where life can exist (planets, moons, gas clouds...)
• what is the type of life that scientists think exists in our solar system
• what different types of beings do scientists think can exist (carbon-based, silicon-based (???) )
• why are there so many reports of alien sightings (UFOs) and are they real