I don't know. Anything which is mysterious to us today shall one day be explained, refuted or supported by science in the future. There is possibly one great mystery at the core of it all, one that we are too stupid to understand, but right now I do not believe we are close to that, if it even exists. I can't really think of anything that is not already, or will not be in future, explained by science.

There are things which we cannot explain currently, but no things which science cannot explain. Science is the mystery of the world.