Submitted March 21, 2011
Planet Earth
Earth is the only planet in our solar system known to harbor life.All of the things we need to survive are provided under a thin layer of atmosphere that separates us from the uninhabitable void of space.
Submitted March 21, 2011
Earth is the only planet in our solar system known to harbor life.All of the things we need to survive are provided under a thin layer of atmosphere that separates us from the uninhabitable void of space.