The Mysterious Universe is a popular science book by the British astrophysicist Sir James Jeans, first published in 1930 by the Cambridge University Press. In the United States, it was published by Macmillan. The book was denounced by the Cambridge philosopher Ludwig Wittgenstein, because "Jeans has written a book called The Mysterious Universe and I loathe it and call it misleading. Take the title...I might say that the title The Mysterious Universe includes a kind of idol worship, the idol being Science and the Scientist."