What I noticed about the size of the planets is that Venus is just about the same size as Earth. I also noticed that Pluto and Mercury are about the same size as the Moon. I also figured out that there is a lot of objects that we do not know about and probably wont know about. The universe is so vast that no one will ever know what secrets I holds. Even if there is another planet that has intelligent life I doubt that we will ever know about it.