"Cheops Unveils Shiniest Exoplanet: A Mirror-Like Giant in Space"

ESA's Cheops mission has discovered an ultra-hot exoplanet, LTT9779 b, with an albedo of 80%, making it the shiniest exoplanet ever found. The planet's high reflectivity is due to its metallic cloud cover composed of silicate and metals like titanium. LTT9779 b is an ultra-hot Neptune, unique in its size and close orbit to its star, prompting further studies to understand its atmosphere and survivability. The discovery was made through detailed measurements by Cheops, which revealed the planet's high reflectivity and the presence of reflective clouds of metal.