Like dark matter and energy, and string theory or quantum gravity, or inflationary cosmology. Furthermore, current science- at least in physics- is so complex that very few people can claim to really understand it, let alone create it. I cannot. So we have to rely on the high priests of physics both to create it and to explain to us what it means(the latter is the more difficult).

Perhaps the real difference between science and religion is that religion proposes relatively simple explanations of nature and its creation. Whereas science is so complicated as to be beyond our understanding. But the result is much the same. We have to trust that other people who supposedly know better than us are telling us the truth.