Astronomers observed an unusual nebula, which could help determine the fate of the Sun in the distant future.
A team of astronomers at the Institute of Astrophysics in Andalucia (Spain) led by Martin Guerrero discovered a nebula 'like just born'. The areas outside this nebula look like the inside and vice versa.
This unusual object known as (also known as planetary cloud) , has nothing to do with planets. On the contrary, it is an object that is released when the star transforms from the giant red star into and throws away the outer layers. When that happens, the star becomes increasingly hot and ionizes nearby matter.
However, the situation in the HuBi 1 nebula (17,000 light-years from Earth) is the opposite. The closer to the star the less ionized atoms. 'Everyone thinks that it is impossible. At that time, we know that we have come across HuBi 1 at a time when the central star goes through a short 'rebirth' stage, to become a metal-rich star ' - TS Xuan Fang, dong study author, said.
Why is that? Scientists believe that the star "returns to life" too late and continues to throw matter. This creates a wave of carbon, causing vibrations in atoms in areas outside the nebula. Because the star is rapidly darkening, it cannot ionize nearby matter, resulting in the formation of 'reverse nebulae'.
Astronomers believe that, at first, this star has a mass of 1.1 times the mass of the Sun. That means that after about 5 billion years, when the Sun becomes a red giant, it may undergo a similar process.