Rate/speed Of Expansion Vs Suspended Animation

[jeremyb]

Hypothetical Situation:

 

Craft is traveling and maintaining the exact speed of the universes expansion, in exactly the opposite direction. In theory, the craft would not be moving at all.

 

Would or could this be considered Suspended Animation? Does time itself stop?

[CraigD]

Craft is traveling and maintaining the exact speed of the universes expansion, in exactly the opposite direction.

How would you calculate this, Jeremy?

 

The expansion of the universe isn’t a single speed and direction. Rather, for any 2 points in the universe, you can calculate the speed with which they are moving exactly away from one another by dividing the distance between them Hubble constant, which is observed to be about [imath]2 \times 10^{-12} \,\text{s}^{-1}[/imath].

 

To be able to calculate the speed and direction your craft should move, you have to choose some point in space relative to it. How would you make this choice?

 

In theory, the craft would not be moving at all.

The craft would not be moving (would have zero velocity) relative to the point you selected to calculate the velocity to give it. Relative to any other point, it would be moving.

 

Would or could this be considered Suspended Animation? Does time itself stop?

No.

 

Consider that, right now, via the above calculation, The Sun, Earth, you and me are stationary relative to various points about 10 light-years from here. None of these bodies, or us, however are experiencing the stopping of time, nor do stars near these points show any strange qualities.

 

What leads you to speculate that it might?

[jeremyb]

 

Consider that, right now, via the above calculation, The Sun, Earth, you and me are stationary relative to various points about 10 light-years from here. None of these bodies, or us, however are experiencing the stopping of time, nor do stars near these points show any strange qualities.

 

 

stationary from a distance does not equal stationary on a fixed plane. The Sun, Earth, you and me may seem stationary relative to various points about 10 light-years from here, but we are far from being stationary.

 

the spirit of my question was....... an object finds a fixed point and stays there. I could care less what it looks like from a distance, that was not part of the question.

 

I know that may sound a bit harsh, my apologies for that. The question was asked as a hypothetical, no calculations needed.

Edited March 13, 2012 by jeremyb

[joekgamer]

stationary from a distance does not equal stationary on a fixed plane. The Sun, Earth, you and me may seem stationary relative to various points about 10 light-years from here, but we are far from being stationary.

 

the spirit of my question was....... an object finds a fixed point and stays there. I could care less what it looks like from a distance, that was not part of the question.

 

CraigD's point was that, by choosing specific points of reference, we are stationary. If different points of reference are chosen, then we are not stationary. What point(s) of reference are you using?