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📡 ستارهٔ جوانِ "Elias 2-27" در ۳۷۸ سال-نوری دورتر از زمین قرار دارد. محققین با استفاده از رصدخانهٔ ALMA در شیلی، صفحه‌ای پُرجرم از غبار در اطراف این ستاره شناسایی کردند؛ این توده‌هایِ گرد و غبار و گاز به‌طور نامتقارنی به دور ستاره پخش شده‌اند. برای اولین بار، ساختاری از بازوهای مارپیچی به‌ دور یک ستاره اندازه‌گیری شده.

دلیل اهمیت این موضوع، ایجاد شناختِ درست از شکل‌گیری سیاره‌هاست. به مرور زمان (طی هزاران میلیون سال)، ناپایداری‌های گرانشی و جریانِ گازهایِ داغ باعث شکل‌گیری کره‌های بزرگ‌تر خواهد شد (مشابه زمین). [۲۷ خرداد ۱۴۰۰] —🌐—[پست قبل: 🔗]

🛰 @TechX

آسمان شب
📡 ستارهٔ جوانِ "Elias 2-27" در ۳۷۸ سال-نوری دورتر از زمین قرار دارد. محققین با استفاده از رصدخانهٔ ALMA در شیلی، صفحه‌ای پُرجرم از غبار در اطراف این ستاره شناسایی کردند؛ این توده‌هایِ گرد و غبار و گاز به‌طور نامتقارنی به دور ستاره پخش شده‌اند. برای اولین بار، ساختاری از بازوهای مارپیچی به‌ دور یک ستاره اندازه‌گیری شده.

دلیل اهمیت این موضوع، ایجاد شناختِ درست از شکل‌گیری سیاره‌هاست. به مرور زمان (طی هزاران میلیون سال)، ناپایداری‌های گرانشی و جریانِ گازهایِ داغ باعث شکل‌گیری کره‌های بزرگ‌تر خواهد شد (مشابه زمین). [۲۷ خرداد ۱۴۰۰] —🌐—[پست قبل: 🔗]

🛰 @TechX
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How to Buy Bitcoin?

Most people buy Bitcoin via exchanges, such as Coinbase. Exchanges allow you to buy, sell and hold cryptocurrency, and setting up an account is similar to opening a brokerage account—you’ll need to verify your identity and provide some kind of funding source, such as a bank account or debit card. Major exchanges include Coinbase, Kraken, and Gemini. You can also buy Bitcoin at a broker like Robinhood. Regardless of where you buy your Bitcoin, you’ll need a digital wallet in which to store it. This might be what’s called a hot wallet or a cold wallet. A hot wallet (also called an online wallet) is stored by an exchange or a provider in the cloud. Providers of online wallets include Exodus, Electrum and Mycelium. A cold wallet (or mobile wallet) is an offline device used to store Bitcoin and is not connected to the Internet. Some mobile wallet options include Trezor and Ledger.

📡 ستارهٔ جوانِ "Elias 2-27" در ۳۷۸ سال-نوری دورتر از زمین قرار دارد. محققین با استفاده از رصدخانهٔ ALMA در شیلی، صفحه‌ای پُرجرم از غبار در اطراف این ستاره شناسایی کردند؛ این توده‌هایِ گرد و غبار و گاز به‌طور نامتقارنی به دور ستاره پخش شده‌اند. برای اولین بار، ساختاری از بازوهای مارپیچی به‌ دور یک ستاره اندازه‌گیری شده.

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