As for the travel of light through space, let us note that it is assumed that light always travels at the same speed, and that the light originated at the far distant point. Fossils are dated by type of rock and type of rock dated by fossils. Anomalous formations abound, confounding expectations. True science begins with hypothesis, but does not conclude with it. The dinosaurs and their extinction present no threat to six day creation, nor to the account of Noah and the ark.
Dinosaurs are merely animals which are now apparently extinct.
Modern times have seen, and continue to see other created kinds become extinct. There is no fact pertaining to those amazing beasts or their fossil remains that conflicts with any Biblical statement. Even as the apostle Peter prophesied that they would, men conveniently forget the Great Flood. The fact is that even to this day, stupendous evidence remains of that great universal cataclysm. The Noahic deluge was a world-wide event which surely changed the face of the earth fundamentally.