At the end of a lecture on astronomy, describing how the planets orbit the Sun, a little old lady at the back of the room stood up and said: "What you've told us is all rubbish. The world is really a ...

Because dark matter is completely invisible to light, science had to look for clever new methods to spot it.

We can't see dark matter directly, so studying it pushes the boundaries of our creativity as scientists. How exciting, says Chanda Prescod-Weinstein ...