Astronomers have discovered the remains of a star, the explosion of which Chinese scientists observed 2,000 years ago.

In 48 AD, Chinese astronomers observed the birth of a nova - explosions that occur on

the surfaces of white dwarfs sucking material from their partner in a binary system. After the explosion, they leave behind clouds of gas and dust, forming a nebula.

Similar events in space were mentioned throughout the history of mankind, but this new one was one of the first recorded extrasolar events.

The researchers observed the NGC 6656 globular cluster for seven nights between 2015 and 2017 using the Muse tool installed on the VLT telescope in Chile.

“We measured the brightness of the nova we discovered and calculated its approximate age. It turned out that she was about 2000 years old.”

Fabian Göttgens, lead author of the study

Previously astrophysics from the University of Toronto withusing the radio telescope "Arecibo" caught the radiation of the Black Widow pulsar in the process of destroying its companion substar. Scientists have converted the radiation into sound - it turned out a beautiful melody, during which the companion as if asking for help.