Most of the matter in the universe is missing. Scientists believe around 85% of the matter in the cosmos is made of invisible dark matter, which has only been detected indirectly by its gravitational effects on its surroundings. My colleagues and I – a team of some 250 scientists from around the world working on a dark matter experiment called LUX-ZEPLIN (or LZ) – today report our latest findings from the long quest to discover exactly what this dark matter is made of. We have not yet found the.