Can Universe Be Decelerating in Time?

  • Context: High School 
  • Thread starter Thread starter VarnaiKristof
  • Start date Start date
  • Tags Tags
    Movement Time
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
4 replies · 1K views
VarnaiKristof
Messages
2
Reaction score
0
TL;DR
Since the universe exploded (big bang) the velocity of objects in it changed, could the same be true for our arrow in time (relativity aside).
Is it theoretically possible that the whole universe is decelerating in time?

My question originates from the discovery, that objects further away accelerates away faster.
Is that acceleration measured from us or from the center of the big bang?
 
Physics news on Phys.org
VarnaiKristof said:
Summary:: Since the universe exploded (big bang) the velocity of objects in it changed
Is that so? What's our velocity now then, and what was it earlier?

could the same be true for our arrow in time (relativity aside).
The arrow of time is a binary thing. This way is the future, the other way being the past. There's no magnitude to it.

Is it theoretically possible that the whole universe is decelerating in time?
You seem to be referring to the rate at which time flows, in which case I'd again ask you what rate it runs now, and what rate it ran earlier? It makes no more sense than saying a meter is a different size at this end of the field than at the other end.

My question originates from the discovery, that objects further away accelerates away faster.
They don't. The rate of expansion is not a speed or velocity. Different units (1/sec), vs m/sec.
 
  • Like
Likes   Reactions: etotheipi and Dale
VarnaiKristof said:
Since the universe exploded

It did not explode.

VarnaiKristof said:
the center of the big bang

There is no such thing. You have quite a lot of misconceptions to clear up :smile: Please use our "search" option to find some topics about Big Bang, where most of this misconceptions were discussed.
 
  • Like
Likes   Reactions: Orodruin
Thank you for the quick answers. It is quite tricky to understand these concepts, not alone knowing some parts were explained to me incorrectly. I will look into the forums.