The gadget will soon come online, looking for different neutrino flavors in a massive trove of data.

TheJUNO detectoris a giant orb-shaped machine hidden 700 meters below a granite hill in southern China.

The orb is full of a special liquid compound designed to emit light when neutrinos pass through it.

China’s neutrino observatory nears completion, aiming to unlock cosmic mysteries

After installation is complete, the orb will be completely submerged in purified water.

Neutrinos are known to come in threeflavors: electron neutrino, muon neutrino, and tau neutrino.

Hyper-Kamiokande and DUNE will use different approaches to study neutrinos while also crosschecking JUNO’s results.