For the first time, supernova SN 1987A appeared in the southern night sky on February 24, 1987 and became one of the most studied objects in the history of astronomy. The supernova resulted from the catastrophic death of the blue supergiant in the Large Magellanic Cloud - the Milky Way satellite galaxy distant by 168,000 light years. It was the brightest supernova since the Kepler supernova event in 1604 and the first since the invention of the telescope.
A brilliant new star was first noticed by two astronomers from the Las Campanas Observatory in northern Chile. The new study succeeded in creating a time scale, demonstrating the development of a supernova for 25 years (1992-2017). The shots show a shock wave breaking out. The authors also add evidence that the expanding supernova remnant is not formed as a Saturn ring, but in the form of a donut (torus). They also confirm that the shock wave reached a speed of 1000 km / s. Acceleration occurred due to the fact that the expanding torus made its way through the ring of debris.
