- #1
Rebbyte
- 5
- 2
I'm just trying to figure somethings out concerning the accelerating expansion of the universe and the measured redshift, etc.
If a light emitting object moves away from us, because of the expansion of the universe, the speed of that object causes a redshift in this light. But this light, from the time it is emitted to the time it is received, also travels through an expanding fabric of space. Like if it travels through a stretching rubber band. This will also cause a extra redshift. So long distance objects will appear to be accelerating away.
Since the expansion of the universe stretches the rubber band, the traveled path will also be longer than only causing by the movement of that object.
How is this been accounted for in the measurements and formulas for the use of standard candles?
If a light emitting object moves away from us, because of the expansion of the universe, the speed of that object causes a redshift in this light. But this light, from the time it is emitted to the time it is received, also travels through an expanding fabric of space. Like if it travels through a stretching rubber band. This will also cause a extra redshift. So long distance objects will appear to be accelerating away.
Since the expansion of the universe stretches the rubber band, the traveled path will also be longer than only causing by the movement of that object.
How is this been accounted for in the measurements and formulas for the use of standard candles?