Many of the greatest discoveries of science seemed initially to be so incredible that it took decades or even centuries before they were generally accepted. But accepted they were, eventually. And the reason why they were accepted was not because they had become any less incredible. Scientific fact is accepted on the basis of the evidence, regardless of the incredible truth to which that evidence points. Facts such as the immensity of the universe, and its cataclysmic genesis from a singularity in space and time, as well as the smallness of the atom, or the bizarre properties of quantum phenomena, are just as incredible today as they were when they were first discovered And yet all of these incredible theories have taken their place in the realm of accepted scientific knowledge, not because they have become any less incredible since they were first proposed, but because the evidence for them has been irrefutable. In science, irrefutable evidence triumphs over incredibility, and this is exactly what gives science the power to discover unexpected or incredible truth.