Astronomers have discovered the most reflective planet outside the solar system ever seen. The ultra-hot extrasolar planet, or exoplanet, acts like a cosmic mirror because it is covered by reflective clouds of metal.
The planet, designated LTT9779 b, is located around 264 light-years from Earth and reflects around 80% of the light that shines on it from its parent star. As a comparison to LTT9779 b, Earth reflects just 30% of the light that falls on it from the sun. The ultra-hot LTT9779 b is so reflective that it is the first exoplanet found that gives the solar system's shiniest planet, Venus, a run for its money; Venus has a thick layer of clouds that reflect around 75% of incident sunlight.
