eli5: does redshift disobey the first law of thermodynamics
In: 0
energy of a photon is equal to planks constant times frequency.
The energy is independent of the wavelength. As space expands the photons travel through more space, decreasing their “speed”, causing wavelength to increase as it is being “stretched”
Energy is thus conserved
#######
Edit: I am wrong, scientists are still confused on this subject of cosmological red shift
#######
Latest Answers