Is the Universe flat?

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Thomas M

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I was watching "The Universe" on the discovery channel and they did an interesting experiment. They measured the angles of a triangle whose points were at earth and the far 2 corners of the universal background radiation (if im not making sense, im sorry.) They said that if the triangles angles added up to 180 degrees, the universe is flat. But if the universe is curved, It would add up to more than 180.

They did the experiment and the angles added up to exactly 180, indicating the universe is flat.

Here's my question, how can the universe be flat if i can point at 3 stars in the sky, and the earth and those 3 stars wont be in the same plane. That means the universe isn't flat (at least to me.) Can someone PLEASE explain???

Thank you :)
Just watch the universe,
episode- parrallel universes.

It's confusing me (btw, dont laught, laugh at the discovery channel :P)
 
I don't think the universe could be measured in that way since there is no way to define it's shape or size. That would be like me asking you the area of the cube inside my pocket, and you've never even seen the cube, and for all you know, I might not even have one. It might be a triangle. You wouldn't know the difference because you can't gather any information about it.

And since we have no information about the boundaries of the universe, it is not possible to determine it's shape or size, In addition since things move within the universe in a three dimensional manner, I believe it to be impossible for it to be "Flat".

It just sounds like someone said "The universe is flat" to sound quippy and catchy, and what have you, just so someone reads their article. If I were you I would discount that lame statement.
 
HAHAHAHAHAHA! No.

The Universe has more dimensions than just 3 spatial dimensions and we currently don't know what shape it is!
 
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