Physics is all about observation, but how much can we actually see? We explore some of the limits of observation — be they natural, scientific, political, or down to the fuzzy quantum nature of reality.
The cosmic microwave background (CMB) is light left over from the Big Bang. It has revealed a wealth of information about our Universe and turned cosmology into a precision science. How can a single picture tell us so much?
Some problems are so complex that, although we know how to solve them in theory, it would take billions of years to find a solution even on the fastest supercomputer. Come on a trip through the world of complexity and meet the famous P versus NP problem.