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➡️ About 700 light-years away, a star is nearing its end. It's formed a colorful cloud called the Helix Nebula. This nebula is a common sight for dying stars. It's made of gases that were once part of the star. The nebula is around 3 light-years wide and has a very complex shape.


⬅️ سحابی حلقه‌ای یا NGC 7293، یک نمونه‌ی شناخته‌شده و نزدیک از سحابی سیاره‌ای است که نشان‌دهنده‌ی مرحله‌ی نهایی تکامل ستارگان است. این تصویر عمیق با ترکیب داده‌های باریک‌باند از خطوط نشری اتم‌های هیدروژن به رنگ قرمز و اتم‌های اکسیژن به رنگ آبی-سبز، جزئیات شگفت‌انگیزی از سحابی حلقه‌ای، از جمله منطقه‌ی درخشان داخلی آن که حدود سه سال نوری وسعت دارد، را نشان می‌دهد. نقطه‌ی سفید در مرکز سحابی حلقه‌ای، ستاره‌ی مرکزی داغ و در حال مرگ این سحابی سیاره‌ای است.

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#️⃣ #Astrophysics
✈️ @IDSchools
✈️ @IDS_Physics
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#نگاره_روز

➡️ About 700 light-years away, a star is nearing its end. It's formed a colorful cloud called the Helix Nebula. This nebula is a common sight for dying stars. It's made of gases that were once part of the star. The nebula is around 3 light-years wide and has a very complex shape.


⬅️ سحابی حلقه‌ای یا NGC 7293، یک نمونه‌ی شناخته‌شده و نزدیک از سحابی سیاره‌ای است که نشان‌دهنده‌ی مرحله‌ی نهایی تکامل ستارگان است. این تصویر عمیق با ترکیب داده‌های باریک‌باند از خطوط نشری اتم‌های هیدروژن به رنگ قرمز و اتم‌های اکسیژن به رنگ آبی-سبز، جزئیات شگفت‌انگیزی از سحابی حلقه‌ای، از جمله منطقه‌ی درخشان داخلی آن که حدود سه سال نوری وسعت دارد، را نشان می‌دهد. نقطه‌ی سفید در مرکز سحابی حلقه‌ای، ستاره‌ی مرکزی داغ و در حال مرگ این سحابی سیاره‌ای است.

🌐 منبع

#️⃣ #Astrophysics
✈️ @IDSchools
✈️ @IDS_Physics

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