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/sci/ - Science & Math

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5684657 No.5684657[DELETED]  [Reply] [Original]

>> No.5684663

"Expanding" just means the distance between points is increasing over time. It doesn't have to expand "into" anything.

>> No.5684665

>what is metric expansion

lrn2relativity

>> No.5684673
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5684673

>>5684663
>singularity

>no external

>

>> No.5684676
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5684676

>>5684673
>.

>> No.5684683

is it expanding south east north west or all 4 directions from us? and by us i mean Texas.

>> No.5685252

>>5684657
all dimensions expand
think of graph paper with the spaces between the lines expanding
>or it appears to be expanding...

>> No.5685346
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5685346

>>5685252

>> No.5685408

It's really staying the same size, it's just that everything else inside it is getting smaller and slower.

>> No.5685425

>>5684683
Into Saudia Arabia I think.

>> No.5685429

finite yet unbounded etc

>> No.5685643
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5685643

Size is ALWAYS a comparison. By definition, there is nothing outside of reality with which to compare reality to. So its size is undefined, by definition, else, its size is determined wholly from within, which is disturbing considering how much a shit fit they go into when you start talking about circular reasoning as the only valid method for determining truth value.

>> No.5685648

Itself. Technically we (matter) can be shrinking.

>> No.5685748

Space isn't a thing, it's a concept and does not exist.

>> No.5685753

The expansion of the universe is an illusion caused by the slowing down of time itself.

Think space-time relativity