Inside Japan's big physics

For more than half a century, Japan has been at the forefront of 'big physics', asking fundamental questions about the laws which govern the workings of the universe. Questions of this magnitude require cutting edge technology on a truly massive scale. Over three episodes, Nature reporter Davide Castelvecchi travels across to Japan to get a rare look inside three of its flagship experiments.

Part one: Super Kamiokande

The world's largest neutrino detector

Part two: KAGRA

The world's most advanced gravitational wave detector

Part three: Belle II

The experiment which could revolutionise particle physics