physics and astronomy come up with some cool stuff.

"The Wilkinson microwave anisotropy probe settled the long-standing question of the age of the universe: it is officially 13.7bn years old (to within 1 per cent accuracy). But more remarkably, the data showed that dark energy is not a fluke, but makes up 73 per cent of the matter and energy of the entire universe. To deepen the mystery, the data showed that 23 per cent of the universe consists of "dark matter," a bizarre form of matter which is invisible but still has weight. Hydrogen and helium make up 4 per cent, while the higher elements, you and I included, make up just 0.03 per cent. Dark energy and most of dark matter do not consist of atoms, which means that, contrary to what the ancient Greeks believed and what is taught in every chemistry course, most of the universe is not made of atoms at all."