Scientists Pinpoint Absorption Strength of Venusian UV‑Dark Substance

A new study sharpens the picture of a long‑standing mystery in Venus’s atmosphere. Researchers measured how strongly the unknown material that creates the planet’s dark ultraviolet patterns absorbs light. The calculation narrows the range of possible substances, ruling out many candidates and leaving only a handful of organic, inorganic, or unexpected compounds. By quantifying the absorption, the team provides a concrete target for future probes to test directly. The result equips upcoming missions with a clear diagnostic: if a spacecraft can detect the predicted absorption signature, it will confirm the substance’s identity and help explain how Venus’s clouds maintain their pale yellow hue. This advance turns a century‑old puzzle into a solvable problem for the next generation of planetary explorers.