No. They are just not able to couple all their energy to the receptor because the spot they were emitted from is receeding from the receptor. Same is happening if you listen to the horn of a car……….etc…
It is called the Doppler effect.
Wrong, doppler effectis a different phenomena, - I am talking about
Cosmological Redshift, and it is mainly due to that we know that the universe is expanding and how much.
Energy is not known to be conserved in GR except in the limit where it becomes Special Relativity (and then further limits to classical mechanics).
And that’s in fact a problem, because this then “should” mean that the law of nature are different at your head than at your feed.
Accepting that distances (everywhere) are changing proportional to time dilation, will solve that problem too,- hence all the law of nature will always be the same.
As to where the energy goes, there are a couple of options
- It appears as gravitational energy.
- It simply vanishes (after all if energy is not conserved it can vanish!).
Nothing but unacceptable speculation, I know that, - you know that too.
The fact is that you
believe the
wavelength have change in the spectre of light that have existed in billion of years.
You don’t see that distances (the yardstick) have changed too, therefore the wavelength is always still the same, - also even though that distance (the yardstick) have “expanded”.
What I mean, we believe that once the size of the universe was only a fragment of a millimetre.
This could be VERY wrong and "right". Yes the Universe was once "smaller" BUT the yardstick would still be a yardstick, to any time, and doesn’t matter where. (also "theoretically" when the Universe only would only be 1 mm big)
Distances are relative and equal-proportional to the size of the Universe, - to all time.
Of the same reason the Mercury orbit anomaly is NOT solved.
Simply because of distances (the yardstick) by Mercury is simply a bit longer than here, - so even though time is a bit slower by Mercury, everything would look exactly "normally" from here.
The Mercury orbit anomaly is caused by resistance against motion.
Mercury is about 3 km closer to the Sun than we believe.
This is how Mercury gain kinetic energy to overcome that kinetic lost it have due to resistance against motion.
Resistance against motion do not: “just disappear “ - “out in the blue” - when constant speed is reached.