Why is it Dark at Night?
People who liked this video also liked
Comments
13 comments posted so far. Login to add a comment.
30
4. nakama7777 commented 12 years ago
my head just exploded...in a good way XD
22
6. ol1v33r commented 12 years ago
This video is boss, the only thing i am slightly unsure of is:- Are the distant stars turning infra-red because they are going away from us at a faster rate and their wavelength is increasing or slowing down like the record and lowering their wavelength to infra-red?
28
9. xxxLesy commented 12 years ago
#6 Yes. It was recently discovered that the universe is accelerating in expansion. That however left many scientists baffled, because they all assumed the expansion should be slowing down. They now assume there is an invisible force, pushing all the stars further apart.
The video is not completely accurate though. Scientists don't agree that the universe is limitless. NASA believes the universe is infinite and flat (standard model from 1930s). Others are certain that the universe has the shape of a football (soccer ball) - a dodecahedron. Einstein calculated the radius of the universe being 10^10 light years.
For further info I recommend watching "Through the wormhole" series.
The video is not completely accurate though. Scientists don't agree that the universe is limitless. NASA believes the universe is infinite and flat (standard model from 1930s). Others are certain that the universe has the shape of a football (soccer ball) - a dodecahedron. Einstein calculated the radius of the universe being 10^10 light years.
For further info I recommend watching "Through the wormhole" series.
24
11. millybert69 commented 12 years ago
the reason for it being dark at night is because the suns nakerd and has simply gone to bed SIMPLES just like every other person does
+15 1. Gorf commented 12 years ago