Universe expanding +c. +c impossible?

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Discussion Overview

The discussion revolves around the concept of the universe's expansion and the implications of moving apart faster than the speed of light (c). Participants explore the nature of this expansion, how it relates to the transmission of information, and the visualization of distant objects in an expanding universe.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant asks for an explanation suitable for the general public regarding the universe's expansion.
  • Another participant states that while transmitting information or moving objects faster than c is prohibited, the expansion of space itself can occur at rates exceeding c.
  • A different viewpoint suggests that during the universe's expansion, it is not that objects are moving apart in space, but rather that the distances between them are increasing.
  • One participant questions how we would observe two galactic clusters that are moving away from each other at speeds greater than c, using a balloon analogy.

Areas of Agreement / Disagreement

Participants express differing views on the implications of the universe's expansion and the nature of faster-than-c movement, indicating that multiple competing perspectives remain in the discussion.

Contextual Notes

There are unresolved assumptions regarding the visualization of distant objects in an expanding universe and the implications of moving apart at speeds greater than c.

budd
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can anybody explain this to joe public?
 
Space news on Phys.org
Transmitting information (or moving a physical object - same thing) from place to place faster than C is banned. Moving the two places apart faster than C is allowed
 
or, to think of it in a mind warping way (no pun intended)... When the universe expands, it's not that things are flying apart from each other, it's that the distances between everything are getting bigger.
 
so on this balloon thingy. if we start of with 2 galastic clusters next to each other but movin g away at +c how do we see them?
 

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