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pitch to voters on Election DayDisney expected to lay off thousands in its biggest round of cuts this yearDisney expected to lay off thousands in its biggest round of cuts this yearDisney expected to lay off thousands in its biggest round of cuts this yearAckman warns speculative trading is turning the stock market into a casinoAckman warns speculative trading is turning the stock market into a casinoAckman warns speculative trading is turning the stock market into a casinoRedMagic takes its RGB liquid-cooled gaming phone global as the 12 ProRedMagic takes its RGB liquid-cooled gaming phone global as the 12 ProRedMagic takes its RGB liquid-cooled gaming phone global as the 12 ProMalachi Jordan commits to St. John's, its first five-star recruit in 13 yearsMalachi Jordan commits to St. John's, its first five-star recruit in 13 yearsMalachi Jordan commits to St. John's, its first five-star recruit in 13 yearsSigns point to a big BioWare N7 Day celebration planned before the studio 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a potentially massive dwarf planet candidate beyond PlutoEating blueberries every day may ease depressive symptoms in older adultsEating blueberries every day may ease depressive symptoms in older adultsEating blueberries every day may ease depressive symptoms in older adultsIran warns of a 'new battlefield' after reported US strike on QeshmIran warns of a 'new battlefield' after reported US strike on QeshmIran warns of a 'new battlefield' after reported US strike on Qeshm
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Global • 2026-10-30, 19:19 GMT • ~1 min read

Three planets found surviving their stars' red giant expansion, challenging old models

تین سیارے اپنے ستاروں کے سرخ دیو بننے کے باوجود بچ گئے، پرانے نظریات کو چیلنج

तीन ग्रह अपने तारों के लाल दानव बनने के बावजूद बच गए, पुराने सिद्धांतों को चुनौती

Three planets found surviving their stars' red giant expansion, challenging old models

Key points

اہم نکات

मुख्य बातें

  • Chinese researchers have discovered three exoplanets that survived even though their host stars expanded into red giants, a stage at which existing models said they should have been swallowed up.
  • The team, led by Professor Qian Shengbang of Yunnan University, confirmed the finding by studying small changes in the brightness of the host stars of 24 Boo, HD12648 and TYC4282-605-1, which have entered the core helium-burning phase.
  • The planet 24 Boo b, orbiting in about 30 days at roughly 18 percent of the Earth-Sun distance, is the closest known exoplanet orbiting a red giant star.
  • چینی محققین نے تین ایسے سیارے دریافت کیے ہیں جو اپنے ستاروں کے سرخ دیو بننے کے باوجود بچ گئے، حالانکہ پرانے نظریات کے مطابق انہیں نگل جانا چاہیے تھا۔ یونان یونیورسٹی کے پروفیسر چیان شینگ بانگ کی ٹیم نے میزبان ستاروں 24 بو، ایچ ڈی 12648 اور ٹی وائی سی 4282-605-1 کی چمک میں معمولی تبدیلیوں کا مطالعہ کر کے یہ دریافت کی تصدیق کی، جو اب مرکز میں ہیلیم جلانے کے مرحلے میں ہیں۔ سیارہ 24 بو بی تقریباً 30 دن میں چکر لگاتا ہے اور زمین سورج کے فاصلے کے تقریباً 18 فیصد پر ہے، یہ سرخ دیو ستارے کے گرد سب سے قریبی معلوم سیارہ ہے۔ یہ دریافت ستاروں کے بوڑھے ہونے پر سیاروں کے نظام کے بارے میں نئے سوالات اٹھاتی ہے، جن میں یہ بھی ہے کہ جب سورج سرخ دیو بنے گا تو کیا ہوگا، حالانکہ محققین کا کہنا ہے کہ اس سے زمین کے بارے میں پیش گوئی براہ راست نہیں بدلتی۔
  • चीनी शोधकर्ताओं ने तीन ऐसे ग्रह खोजे हैं जो अपने तारों के लाल दानव बनने के बावजूद बच गए, हालाँकि पुराने सिद्धांतों के अनुसार उन्हें निगल जाना चाहिए था। युन्नान विश्वविद्यालय के प्रोफेसर कियान शेंगबांग की टीम ने मेज़बान तारों 24 बू, एचडी12648 और टीवाईसी4282-605-1 की चमक में छोटे बदलावों का अध्ययन करके यह खोज की पुष्टि की, जो अब केंद्र में हीलियम जलाने के चरण में हैं। ग्रह 24 बू बी लगभग 30 दिनों में चक्कर लगाता है और पृथ्वी-सूर्य दूरी के लगभग 18 प्रतिशत पर है, यह लाल दानव तारे के चारों ओर सबसे निकट ज्ञात ग्रह है। यह खोज तारों के बूढ़े होने पर ग्रहीय प्रणालियों के बारे में नए सवाल उठाती है, जिनमें यह भी है कि जब सूर्य लाल दानव बनेगा तो क्या होगा, हालाँकि शोधकर्ताओं का कहना है कि इससे पृथ्वी के बारे में भविष्यवाणी सीधे नहीं बदलती।

Chinese researchers have discovered three exoplanets that survived even though their host stars expanded into red giants, a stage at which existing models said they should have been swallowed up. The team, led by Professor Qian Shengbang of Yunnan University, confirmed the finding by studying small changes in the brightness of the host stars of 24 Boo, HD12648 and TYC4282-605-1, which have entered the core helium-burning phase. The planet 24 Boo b, orbiting in about 30 days at roughly 18 percent of the Earth-Sun distance, is the closest known exoplanet orbiting a red giant star. The discovery raises new questions about what happens to planetary systems as stars age, including what may one day happen when the Sun becomes a red giant, though researchers say it does not directly change predictions for Earth's fate.

چینی محققین نے تین ایسے سیارے دریافت کیے ہیں جو اپنے ستاروں کے سرخ دیو بننے کے باوجود بچ گئے، حالانکہ پرانے نظریات کے مطابق انہیں نگل جانا چاہیے تھا۔ یونان یونیورسٹی کے پروفیسر چیان شینگ بانگ کی ٹیم نے میزبان ستاروں 24 بو، ایچ ڈی 12648 اور ٹی وائی سی 4282-605-1 کی چمک میں معمولی تبدیلیوں کا مطالعہ کر کے یہ دریافت کی تصدیق کی، جو اب مرکز میں ہیلیم جلانے کے مرحلے میں ہیں۔ سیارہ 24 بو بی تقریباً 30 دن میں چکر لگاتا ہے اور زمین سورج کے فاصلے کے تقریباً 18 فیصد پر ہے، یہ سرخ دیو ستارے کے گرد سب سے قریبی معلوم سیارہ ہے۔ یہ دریافت ستاروں کے بوڑھے ہونے پر سیاروں کے نظام کے بارے میں نئے سوالات اٹھاتی ہے، جن میں یہ بھی ہے کہ جب سورج سرخ دیو بنے گا تو کیا ہوگا، حالانکہ محققین کا کہنا ہے کہ اس سے زمین کے بارے میں پیش گوئی براہ راست نہیں بدلتی۔

चीनी शोधकर्ताओं ने तीन ऐसे ग्रह खोजे हैं जो अपने तारों के लाल दानव बनने के बावजूद बच गए, हालाँकि पुराने सिद्धांतों के अनुसार उन्हें निगल जाना चाहिए था। युन्नान विश्वविद्यालय के प्रोफेसर कियान शेंगबांग की टीम ने मेज़बान तारों 24 बू, एचडी12648 और टीवाईसी4282-605-1 की चमक में छोटे बदलावों का अध्ययन करके यह खोज की पुष्टि की, जो अब केंद्र में हीलियम जलाने के चरण में हैं। ग्रह 24 बू बी लगभग 30 दिनों में चक्कर लगाता है और पृथ्वी-सूर्य दूरी के लगभग 18 प्रतिशत पर है, यह लाल दानव तारे के चारों ओर सबसे निकट ज्ञात ग्रह है। यह खोज तारों के बूढ़े होने पर ग्रहीय प्रणालियों के बारे में नए सवाल उठाती है, जिनमें यह भी है कि जब सूर्य लाल दानव बनेगा तो क्या होगा, हालाँकि शोधकर्ताओं का कहना है कि इससे पृथ्वी के बारे में भविष्यवाणी सीधे नहीं बदलती।

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