Red star Betelgeuse will take 1,00,000 years to finally perish, claims new study

Even though giant red star Betelgeuse has been showing peculiar behaviour in recent months with many experts believing that it is closer to its death. A recent study has revealed that it will take ar 1,00,000 years for it to finally perish. A team of international scientists led by Meridith Joyce from Australian National University (ANU) including Shing-Chi Leung, László Molnár, Michael Ireland, Chiaki Kobayashi, and Ken'ichi moto published ir findings in Astrophysical Journal this month. supergiant star is a part of Orion constellation and intrigued scientists’ interests to its conspicuous behaviour lately. 

In a statement to Australian National University, Dr Joyce ted that rmally Betelgeuse is one of biggest stars in sky but also said that her team observed two drops in its brightness of star since late 2019. It was this peculiar behaviour that triggered that it could explode soon but Joyce’s team offers a different explanation. Joyce said, “It’s rmally one of brightest stars in sky, but we’ve observed two drops in brightness of Betelgeuse since late 2019...This prompted speculation it could be about to explode. But our study offers a different explanation.”

“We kw first dimming event involved a dust cloud. We found second smaller event was likely due to pulsations of star,” it ded.

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How did researchers find time it will explode?

ANU statement also elaborated that researchers were able to use hydrodynamic and seismic modelling to learn more about physics driving se pulsations and get a more enhanced idea of what phase of its life Betelgeuse is presently in. As oper co-author Dr Shing-Chi Leung from University of Tokyo, analysis “confirmed that pressure waves – essentially, sound waves—were cause of Betelgeuse’s pulsation.” 

“It’s burning helium in its core at moment, which means it’s where near exploding,” Dr Joyce said. “We could be looking at around 100,000 years before an explosion happens.” Furr, ar co-author of study,  Dr László Molnár from Konkoly Observatory in Budapest said that study also revealed size of Betelgeuse and even its distance from Earth.

“ actual physical size of Betelgeuse has been a bit of a mystery – earlier studies suggested it could be bigger than orbit of Jupiter. Our results say Betelgeuse only extends out to two-thirds of that, with a rius 750 times rius of sun,” Dr Molnár said. “Once we h physical size of star, we were able to determine distance from Earth. Our results show it’s a mere 530 light-years from us – 25 per cent closer than previous thought.” 

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