The star, an old red giant named CW Leonis, appears to be trapped in an orange spider web. This image shows the star's rays penetrating the carbon around the star, which is running out of fuel.
NASA released this image on the eve of Halloween: "Carbon in the star's core as an additional product "Nuclear fusion is produced." CW Leonis is the closest carbon star to Earth, shining at a distance of approximately 400 million light-years from us, which is about 100 times the distance from the nearest star system, Alpha Centauri. The star is in the last stages of its life, from fusion of hydrogen in the nucleus to fusion in the outer layers, like what happens in the sun.
CW Leonis position in the constellation of Leo
Credit: Brian Simpson, Universe Guide/Night Vision
According to NASA, this stage in the life of a red giant gives life again. Studying such stars can also allow us to predict the behavior of the Sun at the end of its life, billions of years from now. The sun currently uses hydrogen as fuel in its nucleus, but at a much later time the hydrogen runs out and the star begins to disintegrate.
Eventually, the temperature of the plasma or very hot gas around the nucleus rises and causes To fuse hydrogen once more in the outer layers of the star and increase the sun's ability to produce heat. Eventually the star's fuel runs out, its gas layers are destroyed, leaving a cold core known as the white dwarf.
- End When does the cold and dark world occur?
Given that CW Leonis is relatively close to us, astronomers can examine it in more detail and learn more about how the star interacts with its environment. To earn. They then have the opportunity to extend the results to more distant stars that Hubble may be able to study in less detail.
Hubble has studied the star several times over the past 20 years. Is. "The intricate internal structure of the shells and arcs may have been formed by the star's magnetic field," NASA said. "Hubble's close observations of CW Leonis over the past two decades also show the expansion of strings of material thrown around the star." The appearance of inherent brightness or brightness has fluctuated. Although the exact cause is not yet known, these rapid changes may be due to a change in the dust structure around the star, which causes its light to shine in different directions over time.
Cover Photo: CW Leonis star Hubble Credit: ESA/Hubble, NASA, and Toshiya Ueta (University of Denver), Hyosun Kim (KASI)