Tuesday, June 11, 2019

"The Big Bang Wasn't an Explosion" (Thaller); the Universe is super round

The Big Bang Wasn’t an Explosion”.  Michelle Thaller says “Visualize It Like This”.
A good way to visualize this is to imagine you are living on the surface of a Baby Trump baby balloon, and it is constantly expanding. There is no edge to the surface you are living on.  You are living on the surface of a sphere and there is no edge. Sorry, flat earth people.
Likewise, the Universe has no boundary in 3-dimensional space.  That is because it is part of a 4-dimensional (or more) manifold. The way this gets experienced as time dilation as your velocity approaches that of light. Think of time dilation as taking a short cut through the interior of the Trump balloon, without making it pop.
It’s theoretically possible for a teenage Clark Kent to travel through the universe at relativistic speeds and visit many places, and he might return to where he started from in a normal lifetime. In a sense, the universe is round.

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