In 1181 AD in the skies of China and Japan made its appearance a bright spot of similar brilliance to the planet Saturn. Chinese astronomers observed this mysterious point, but six months after its sudden appearance, it suddenly disappeared.
Despite the efforts made by the scientific community for a long time, the identity and the source of the bright spot had not been established until today. As for the identity of the bright spot, the most probable possibilities were gathered in each approach by a supernova star, that is, a supernova explosion.
An international team of researchers claims to have solved the mystery by publishing it in the Astrophysical Journal Letters. As they say, the bright spot was indeed the glow of a supernova explosion that occurred around 1181, from which a nebula was formed that continues to grow, and at an extremely fast pace. The nebula 7.5 thousand light-years away was named Pa30. The nebula now surrounds the Parker star, which has been found to be one of the hottest stars in our galaxy.
According to the researchers, all the characteristics of this nebula (location, age, etc.) perfectly match the profile of the supernova whose glow appeared in the Earth’s dome in 1181. The researchers calculated that the nebula is expanding at a dizzying speed. 1,100 km / sec At this speed the journey from Earth to the Moon would take just five minutes. “It’s very beautiful to be able to solve an astronomical and at the same time historical mystery,” said Albert Zilzstra, an astrophysicist at the University of Manchester in Britain and a member of the research team.