On August 12, 2011 (July 13, 2011 in the lunar calendar), scientists discovered the darkest known planet. On August 12, 2011, scientists discovered the darkest known planet, TrES-2b, reflecting less than 1% of the light. According to the Monthly Notices of the Royal Astronomical Society, Qi Ping, a researcher at the Harvard-Smithsonian Center for Astrophysics (CfA), analyzed accurate brightness measurements provided by NASA's Kepler spacecraft and found that TrES-2b's reflective power was lower than that of black acrylic paint. In 2006, the Transatlantic Exoplanet Search Network (TrES) discovered this extrasolar planet, TrES-2b, which is a gaseous planet about the size of Jupiter and 750 light-years away from Earth. Its atmosphere is composed of vaporized sodium, potassium, and titanium oxide gases that absorb light, but it cannot be used as a reason to explain the planet's darkness. Jupiter, which is surrounded by ammonia clouds, reflects one-third of its sunlight, while the surface temperature of TrES-2b is as high as 1,000 degrees, so there is no ammonia cloud to reflect light. In addition, the planet orbits another star at a relative distance of 5 million kilometers, just like the moon orbits the earth. The planet is not completely black, and its own heat gives it a red halo, which looks like a red-hot coal. Chipping and his research team used the Kepler spacecraft to detect the precise light response after 50 orbits, and observed that the total brightness change of the system was only 6 parts per million, indicating that the surface of the planet is really dark. Comments: The unknown world is surprising and terrifying