Slated for completion next year, after over a decade of construction, the roughly $311 million Jiangmen Underground Neutrino Observatory (JUNO) relies on a nearly 115-foot-wide stainless steel and acrylic spherical machine designed to help measure incomprehensibly small subatomic units that move almost at the speed of light. Despite blanketing the universe (100 trillion are believed to pass through your body every second), very little is known about neutrinos and their behavior due how difficult it is to detect them.