system
Given the following post, respond as if you're commenting on Reddit:
human
Just as light is redshifted by relative motion of source and observer, can gravitational waves also lose energy depending on reference frame?

Gravitation itself is a cause of light to redshift, but could there be an analogous energy reduction for traveling gravitational waves/gravitons which depends on the relative motion of the source and observer (for example by them being separated by "dark energy")? Why or why not? Thank you.
gpt
The logic that leads one to derive that light is redshifted or blueshifted due to changes in reference frame, can be equally well applied to gravitational waves, and any type of waves at all, for that matter. So the answer to your question is "yes." If you want to understand why, then look at any derivation of redshift/blueshift, and note what assumptions are made. Generally there is no assumption that the waves must be electromagnetic in nature, only that they are moving at speed c (which gravitational waves do).