Create: 2020-10-11 Update: 2025-06-28 20:35:47

📡🎥 🎧 کهکشان‌های حلقه‌ای در کیهان بسیار کمیاب‌اند. این کهکشان‌ها اغلب حاصل برخوردهایِ کهکشانی‌اند که باید در زاویه و جهت‌گیری خاصی انجام شه تا چنین حلقه‌ای شکل بگیره. در ۲۹ خرداد ۱۳۹۸ تیم تلسکوپ فضایی هابل این ویدئو رو از ساختارِ کیهانیِ معروف به Arp-Madore 2026-424 منتشر کرد. 🌐

🔘 برای مشاهده‌ی چنین ساختاری در نور مرئی، تلسکوپ فضایی #هابل ما رو به سفری به ۷۰۴ میلیون سال-نوری دورتر می‌بره. این فاصله معادل است با:

- یک #سال_نوری=
=9.46 * 1,000,000,000,000 km

- ۷۰۴ میلیون سال-نوری =
= 704,000,000 * (9.46 * 1,000,000,000,000)

در نتیجه، نوری که هابل ثبت کرده از فاصله‌ای معادل عدد زیر منتشر شده: (به کیلومتر).

= 6.66 * 1,000,000,000,000,000,000,0000

🔘 بخاطر چنین اعداد غیرقابل تصوری، فاصله‌های نجومی رو با سال‌-نوری حساب می‌کنند. سال-نوری معادل است با مسافتی که نور در یک سال طی می‌کنه (تقریبا عدد ۹.۵ با ۱۲ صفر در جلوی آن به کیلومتر). — #رصد_کیهان 🌐

⚠️ دانلود با لینک مستقیم و سایز ۱۷۴ مِگ،4K Ultra HD: 📥

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How Does Bitcoin Work?

Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”

📡🎥 🎧 کهکشان‌های حلقه‌ای در کیهان بسیار کمیاب‌اند. این کهکشان‌ها اغلب حاصل برخوردهایِ کهکشانی‌اند که باید در زاویه و جهت‌گیری خاصی انجام شه تا چنین حلقه‌ای شکل بگیره. در ۲۹ خرداد ۱۳۹۸ تیم تلسکوپ فضایی هابل این ویدئو رو از ساختارِ کیهانیِ معروف به Arp-Madore 2026-424 منتشر کرد. 🌐

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