Is All Motion Truly Relative to Space?

[k9b4]

Why can't motion be relative to space?

 

[Dale]

How fast is space moving? I.e. a spaceship is sitting in space, how would it measure its speed relative to space?

 

[k9b4]

How fast is space moving?

I don't know how fast space is moving. I didn't even know that space could move.

I.e. a spaceship is sitting in space, how would it measure its speed relative to space?

You wouldn't be able to measure speed relative to space.

 

[Dale]

Exactly. That's why motion can't be relative to space. At least not in any scientifically useful sense.

 

[k9b4]

Exactly. That's why motion can't be relative to space. At least not in any scientifically useful sense.

So does space move? What is space?

If space is a thing which moves, surely there must be some way of detecting it.

 

[Dale]

So running your logic in reverse, since there is no way to detect its movement then surely it must not be a thing which moves.

 

[k9b4]

So running your logic in reverse, since there is no way to detect its movement then surely it must not be a thing which moves.

How do you know space moves? What is space?

 

[Dale]

How do you know space moves?

I never claimed that I do know this.

I am not comfortable continuing a conversation when you respond to every comment I make as though I had said the opposite of what I did. Thread closed.