[Soul Surfer]

Doppler shifting is by far the most probable and no other process fits however there are several other observables that confirm that the universe was hotter and smaller in the past and has changed its structure and composition over times comperable with the time since the big bang.

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evolution rules in all things
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[another_someone]

quote:Originally posted by Soul Surfer

Doppler shifting is by far the most probable and no other process fits however there are several other observables that confirm that the universe was hotter and smaller in the past and has changed its structure and composition over times comperable with the time since the big bang.

Thanks.

Is it possible to enumerate on the other observables?

George

[atbb (OP)]

Radiation travels in waves. Visible light falls into a narrow band of this radiation. As far as I understand it light waves get longer between the peaks when an object is going away from our viewpoint giving the red shift. Light passing through fine particles will also increase the wave length, so how can we be sure of the speed of expansion.
Regards,
David

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