Shiny exoplanet with metallic clouds challenges theory of 'hot Neptune desert'
- Newly discovered exoplanet LTT9779b is the shiniest exoplanet ever found, reflecting 80% of its star's light.
- LTT9779b is a 'hot Neptune' that orbits unusually close to its star every 19 hours.
- The planet's high reflectivity comes from metallic clouds saturated with silicates and metals like titanium.
- LTT9779b's clouds likely prevent the planet from evaporating despite scorching temperatures up to 2,000°C.
- The discovery of this reflective 'hot Neptune' defies current theories about planet formation and survival.