A new dark matter detector uses a layered crystal and a cloud of giant atoms to convert the invisible axion signal into a visible flash. Cooled to near absolute zero, it can catch single photons and may, for the first time, reveal the nature of dark matter.
🎯 The name 'axion' was inspired by a laundry detergent brand: physicists hoped the particle would 'wash away' inconsistencies in the theory.