The astrophysicists built the first volumetric model of the Cat's Eye, a study that showed that the outer face of the nebula was surrounded by symmetrical rings, which were created by a pre-recessive jet that proved the existence of a double star.
The planetary nebula is formed when a dying solar mass star throws out its outer layer of gas, creating a paint structure that resembles a cocoon. The Koshae Eye Nebula is one of the strangest and most unusual, located more than 3,000 light years away from the Earth in the constellation of the Dragon.
The highly detailed picture of the Hubble telescope showed that it consisted of a complex binding of knots, spherical sheaths and arctic threads. The mysterious structure of the Cat's eye was confused by astrophysicists because it could not be explained by earlier theories of planetary nebula.
To reconstruct the three-dimensional nebula structure, researchers used the spectrological data of the San Pedro Martir National Observatory in Mexico, which showed how gas was moved in nebula, and based on the data collected, scientists built a three-dimensional model.
It turned out that the high density gas rings were wrapped around the outer skin of the cat's eye, but they were almost symmetrical, and researchers modelled the possible reasons for forming such a structure: it could only be created by a jet.
Only double stars can feed the precessive twig in the planetary nebula, which means that such a system exists in the center of the Cat's Eye, concluded by scientists, who believe that the change in inclination and direction of the jet has, over time, formed all the features observed in the nebula.