The scientists said what will happen to the Sun after his death

The scientists said what will happen to the Sun after his death

New research suggests that the sun will transform into a planetary nebula, which among the most handsome and striking objects seen by astronomers, some shining bright enough to be seen across distances of millions of light years.

Astronomers have long known that the sun will die when it runs out of fuel, but the precise nature of its death throes has been far from clear, even to the most morbid of the field's practitioners. If we are curious about how our star will find its end, the researchers have chose to run a few models and simulations and see what they get. The model forecasts the life process of the stars having different masses.

Prof. Albert Zijlstra at the University of Manchester, who was one among the global group of researchers, said that when the stars die they expel a huge mass of dust and gas into the space, which is called its envelope. Our sun is expected to meet its fate in some 10 billion years, but what might happen after those final moments has always been a point of debate.

Although it was previously believed that our sun's mass is too low to generate a white dwarf and, subsequently, a visible planetary nebula, the model predicts that this is not the case anymore. This contributes luminosity, making the nebula visible, despite the low mass. Visible nebulas glimmered in young spiral galaxies that were known to host massive stars, which could easily produce glowing dust clouds at the end of their lives, the models predicted. The ejected envelope reveals the star's core, which in turn makes the ring of gas and dust shine bright enough for astronomers to spot the planetary nebula. The Professor continued to say that the envelope could measure near about half of the mass of the original star.

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Interestingly, the envelope at the time shines bright enough to make the dying star observable, although not for long - for maximum 10,000 years, which is quite brief from the standpoint of astronomy.

The team used trial-and-error to pinpoint two models that indicate key thresholds in the planetary nebulae.

The discovery also solves a problem that scientists had approximately 25 years ago. This way, they discovered all the material our Sun would eject is likely to heat up a lot more quickly. Indeed, old models suggested anything with a mass less than twice that of the sun would produce a planetary nebula too faint to see. "Not only do we now have a way to measure the presence of stars of ages a few billion years in distant galaxies, which is a range that is remarkably hard to measure, we even have found out what the sun will do when it dies!"

New models show that once the ejection of the envelope is complete, the heat of the stars increases up to three times faster as compared to the previous models.

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