Some days ago, I read in my newspaper that scientists have discovered a planet somewhere in orbit, which looks very much like our own. It is only older and bigger, but the scientists presume that life would be possible there. So they named this planet Earth 2.0
It revolves around the sun pretty much like our own Earth, and also has moons. We'll know more in 2020.
But it possible there exists some other form of life deep in the universe. Little green men, or flying saucers?
Perhaps we'll live long enough to find out....