What crucial difference exists between the Doppler and Cosmological redshift mechanisms regarding energy loss?
Answer
The cosmological photon truly loses energy steadily over its trajectory.
For a standard Doppler shift, the wavelength is effectively different between frames, but the photon's energy is measured the same at creation and interception; conversely, the cosmological photon steadily loses energy as space expands during its long travel.
Related Questions
What is the overwhelmingly dominant signal observed when looking at the grandest scales of the cosmos?What condition causes light to experience a blueshift?How do astronomers quantify the relative motion of light sources precisely?What is the primary physical cause of the Cosmological Shift?What happens to light climbing out of a region of strong gravity (a gravitational potential well)?What type of shift does the Andromeda Galaxy (M31) exhibit relative to the Milky Way?What was the approximate temperature of the light forming the CMB radiation when it was first emitted?What observation forms the bedrock of the expanding universe model established using redshift measurements?What crucial difference exists between the Doppler and Cosmological redshift mechanisms regarding energy loss?Which specific relativistic corrections must GPS satellites constantly apply due to their motion and location?