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If space is expanding to explain the red shift, then why does it expand so much more for radio waves than for x rays? A radio wave at z - 1 expands to twice its wavelength which is several meters, but an x-ray at z = 1 only expands a few nanometers.
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HUH!! Your point is?
A one meter radio wave emitted at z=1 expands to two meters. A billion 1 nanometer waves of X-rays (1 meter) expands to two meters (one billion 2 nanometer waves). What's the problem? :roll: