I wanted to write down analogies which can help people perceive how small our earth is, and hence how small and powerless we humans are in front of the universe, how insignificant we are in comparison to the universe.
As I was thinking of analogies, it suddenly occurred to me that someone on the net might already have done that. I went ahead and searched, and I got almost perfectly what I was expecting. Please read go through the results of http://www.google.com/search?q=sun+earth+milky+way+size+comparison and realize how stupid it is to have hatred based on religions, caste, occupation, nation.... skin colour ! (ROTFL) hohoho!.
YouTube - How big is the Universe?
The universe - How big are you?
YouTube - Hubble Deep Field: The Most Imp. Image Ever Taken (Redux)
YouTube - Large scale simulation of the universe