[sdiy] Trying to establish confidence in my test equipment

[Grant Richter]

Either that or the speed of light is not a constant.

We are viewing light from times when the speed of light was faster,  
so the wavelengths appear stretched in a reference framework where  
the speed of light is slower. Nothing may actually be moving relative  
to us.

Astrophysics is full of untestable theories.

On Mar 9, 2006, at 4:41 PM, Colin f wrote:

> Bob wrote:
>
>> * The abundance of red shift data on things far away...either
>> we're kind
>> of the center of the universe and everything is moving away from us
>
> Eh, no.
> The universe is expanding - every point in the universe is moving  
> away from
> every other point.
> You would (on average) see red shift on distant objects from  
> anywhere in the
> universe.
> Local motion of galaxies may change this.
>
> If you stand on the surface of an inflating balloon, all other  
> points on the
> balloon surface appear to be moving away from you.
> That does not put you at the centre of the balloon.
>
> Cheers,
> Colin f
>