Introduction
In our galaxy there are approximately 300 billion stars and billions of planets, many of which could be habitable by humans or already inhabited, but there are other galaxies out there. Scientists have found that there are approximately 500 billion galaxies which have billions of planets in them which could already have earth-like creatures living on them. Saying that we are the only ones here in our vast galaxy, is highly unlikely. Among all the objects we see on a daily basis, nothing looks like what we see in the universe. There are so many new discoveries and new places to explore being unraveled every day beyond our own world.