HD 140283 nicknamed Methuselah star, was first discovered in the year 2000 and after studying various factors like luminosity, composition, velocity and position was estimated to be 16 Billion years old. Wait WHAT?!! I remember reading somewhere that the estimated age of Universe is 13.7 Billion years. Is that even possible? Or is it that all the facts that we studied about big bang theory, age of universe and every experiment related to it was just one big error?
But hey don't worry, age of Universe is supposedly right. It has been said that the age of Methuselah star is conflicting because of collision of our galaxy with an adjacent galaxy some 12 Billion years ago which made this controversial star to bounce into our system. This star is very rare and has a completely different composition and velocity than the stars of our galaxy which caused the errors in the readings and calculations of its age. With careful observations recently its age has been brought down to 14 Billion years, which brings it closer to the age of universe itself. Researches are still going on and scientists are hopeful to provide solid answers within few years.
Interesting post......... Good job ashish
ReplyDeleteThanks :)
DeleteIt's not older than the universe itself: http://adsabs.harvard.edu/abs/2013ApJ...765L..12B
ReplyDelete"Within the errors, the age of HD 140283 does not conflict with the age of the Universe, 13.77 ± 0.06 Gyr, based on the microwave background and Hubble constant, but it must have formed soon after the big bang."
Read the same paper fully Thom, it has been given "Employing modern theoretical isochrones, which include effects of helium diffusion, revised nuclear reaction rates, and enhanced oxygen abundance, we use the precise distance to infer an age of 14.46 ± 0.31 Gyr".
DeleteEverybody is sure that nothing can be older than universe itself and that's what i have explained in my end para. Thanks for your review anyways :)
Determining the age of an individual star is impossible. Scientists can calculate only the age of cluster of stars as a whole. Now since, Methuselah is not from our galaxy and hence its original cluster is different from its present cluster, this contradiction is arising. Computer models developed to determine the age of stars of one cluster cannot be used to determine the age of stars of another cluster. So the basic problem here is that this star is now in a completely different cluster and scientists needs to find various others factors such as its original cluster and the age at which it entered into our system to determine its actual age. All in all its a balance between Scientific facts and technical assumptions.
ReplyDeleteWhat a fascinating read! The concept of the Methuselah star and the scientific journey to refine its age really highlights the continuous evolution of knowledge and our understanding of the universe. It reminds us how initial data can present perplexing discrepancies, and it takes persistent research and advanced methodologies to uncover the true picture.
ReplyDeleteThis pursuit of deeper understanding and accurate insights isn't limited to astrophysics. In the realm of education, students often face their own "cosmic puzzles" when trying to navigate their academic and career paths. Just as scientists strive to accurately measure the age of a star, students need precise guidance to achieve their goals.
In that spirit, for anyone in Chennai looking to unravel the complexities of higher education or career choices, connecting with top education consultants in Chennai can be incredibly beneficial. Much like the scientific community continuously refines its understanding of the universe, these consultants help students refine their educational journeys, ensuring they get accurate information, clear strategies, and support to reach their full potential. They can help bridge the gap between initial aspirations and successful outcomes, making sure no student feels lost in the vast educational "universe."
Thanks for sharing such an insightful post, Ashish!
This is a fascinating read on the Methuselah star! It's incredible how new observations and data continue to refine our understanding of such ancient celestial bodies. The idea of a star potentially older than the universe certainly sparks a lot of thought and highlights the dynamic nature of astrophysical research. Looking forward to more updates on this intriguing topic!
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