Domneva pa ne more biti osnova znanstvenim pogledom; znanost dosledno temelji na meritvah. V nadaljevanju je opis meritve hitrosti svetlobe, kjer svetloba prihaja s kometa. Meritev kaže, da hitrost kometa vpliva na hitrost svetlobe. Meritev torej ne potrjuje vedno enake hitrosti svetlobe. Znanost torej usodno zanemarja meritve hitrosti svetlobe in se s tem odreka za mnoge težko pričakovanemu znanstvenemu pogledu na hitrost svetlobe.
We do not doubt that the speed of light in a vacuum is always the same. It is said that it cannot be otherwise. However, this opinion is not based on direct measurements. Always the same speed of light in different circumstances without measurements can only be understood as an assumption (hypothesis), perhaps as a postulate.
However, an assumption cannot be the basis of scientific views: science is consistently based on measurements. In the following, there is a description of the measurement of the speed of light where the light comes from a comet. The measurement shows that the speed of the comet affects the speed of light. Therefore, the measurement does not confirm always-the-same speed of light. Therefore, science fatally neglects measurements of the speed of light,