/sci/ - Science & Math » Thread #12598246

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Anonymous Mon 18 Jan 22:59:34 2021 No.12598246 View Reply Original Report

Quoted By: >>12598324 >>12598329 >>12598340 >>12598420 >>12600385

How can the expansion of the universe be ACCELERATING? That seems impossible to me. Nothing can accelerate indefinitely. Let's say an object is accelerating at 1G in space. On the cosmic scale, it wouldn't take long at all to reach the speed of light. This is true for any object that is accelerating. The speed of light should easily be reached for any acceleration on the timescales of the universe?

Anonymous

Anonymous Mon 18 Jan 2021 23:14:43 No.12598324 Report

Quoted By:

>>12598246
object at the edge of the observable universe, about 46 bn ly from us, are receding from us at about 3x c

Anonymous

Anonymous Mon 18 Jan 2021 23:15:47 No.12598329 Report

Quoted By:

>>12598246
objects at the edge of the observable universe, about 46 bn ly from us, are receding from us at about 3x c

Anonymous

Anonymous Mon 18 Jan 2021 23:19:03 No.12598340 Report

Quoted By:

>>12598246
Objects at the edge of the observable universe, about 46 bn ly from us, are receding from us at about 3x c
That doesn't even need accelerating expansion, the steady 2cm/s per ly is enough

Anonymous

Anonymous Mon 18 Jan 2021 23:39:04 No.12598420 Report

Quoted By: >>12598441 >>12599896 >>12600313

>>12598246
it's not
space itself is expanding

as an example:
if the space between you and the door that's 2m away expands 1m/s, it becomes 3m

at the same time, the space between the door and the window at the other side of the room (let's say it's 2m as well) expands at the same speed, 1m/s. it becomes a 3m room.

Suddenly, the distance between you and the other room's window is 6 meters.

But it was 4 before! And space expands at 1m/s!! It stacks up. The further something is, the further it seems to expand.

If there are three 2m rooms that become 3m rooms in 1s, they go from being a length of 6m to 9m, and so on.

If there are 100 rooms of 2m each, they all expand 1m/s, in 1s the entire length of all those room will increase to 300, and so on

Anonymous

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Anonymous Mon 18 Jan 2021 23:44:33 No.12598441 Report

Quoted By:

>>12598420
Oh dang, thanks lawful good science bro. You helped me to think in a slightly new way.

Anonymous

Anonymous Tue 19 Jan 2021 09:51:41 No.12599896 Report

Quoted By:

>>12598420
Good shit

Anonymous

Anonymous Tue 19 Jan 2021 09:57:29 No.12599907 Report

Quoted By: >>12600093 >>12600157 >>12600274

Where does the energy to accomplish accelerating expansion come from? How can the universe be considered a closed system if it expands?

Anonymous

Anonymous Tue 19 Jan 2021 10:03:38 No.12599919 Report

Quoted By: >>12599925

Space isn't expanding, matter is getting smaller

Anonymous

Anonymous Tue 19 Jan 2021 10:07:29 No.12599925 Report

Quoted By: >>12600288

>>12599919
what a cope, just admit you have a micropenis

Anonymous

Anonymous Tue 19 Jan 2021 11:35:36 No.12600093 Report

Quoted By:

>>12599907
dark energy, ie no one knows

Anonymous

Anonymous Tue 19 Jan 2021 12:03:49 No.12600157 Report

Quoted By:

>>12599907
https://youtu.be/IcxptIJS7kQ?t=33m

Anonymous

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Anonymous Tue 19 Jan 2021 12:53:03 No.12600274 Report

Quoted By:

>>12599907

Anonymous

Anonymous Tue 19 Jan 2021 12:59:19 No.12600284 Report

Quoted By:

How do we know that we are not at the edge of the universe ?

Anonymous

Anonymous Tue 19 Jan 2021 13:00:16 No.12600288 Report

Quoted By:

>>12599925
I rather think of it as a neutron penis.

Anonymous

Anonymous Tue 19 Jan 2021 13:10:44 No.12600313 Report

Quoted By:

>>12598420
When will we arrive at the Constellation of Hercules?

Anonymous

Anonymous Tue 19 Jan 2021 13:36:06 No.12600385 Report

Quoted By:

>>12598246
Is the expansion rate itself increasing or is it constant but with an increasing amount of space doing it?

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