T Tam Guest Jan 31, 2009 #3 The sky is the universe. It looks blue because of the atmosphere. There isn't anything "behind" the sky - the sky you see from earth is the entire universe - that's where Earths moon is and many other plants, etc.
The sky is the universe. It looks blue because of the atmosphere. There isn't anything "behind" the sky - the sky you see from earth is the entire universe - that's where Earths moon is and many other plants, etc.
