Datahopa
Heavens Above => Astronomy & Near Earth Phenomena => Topic started by: Snowcrash on February 27, 2013, 18:13:12 PM
I actually think about these things. To me, people with their heads in the clouds are not dreaming anywhere near big enough.
Found this clip in minute physics that is good.
How Big is the Universe? (http://www.youtube.com/watch?v=5NU2t5zlxQQ#ws)