Researchers propose the first candidate detector for mirror life

Researchers at Durham and Strathclyde proposed using circularly polarized luminescence to detect the left-right handedness, or chirality, of life's molecules. Natural proteins, DNA and sugars use fixed orientations, while hypothetical mirror life would use the opposite chirality and could evade existing biological surveillance. The team suggests binding fluorescent molecules to cellular structures and reading whether they emit left- or right-handed polarized light, turning chirality into a measurable signal. The paper appears in Royal Society Open Science and the principle could eventually fit a range of devices. Mirror life does not currently exist and a complete mirror organism may be decades away. This is a preventive candidate method, not a detector already validated on real mirror cells.