فیزیک،پلاسما،لیزر | United States America (US)

Create: 2024-04-05 Update: 2024-05-09 04:55:46

♦️ تلاش برای مطالعه دقیق‌تر خورشید؛ آژانس فضایی اروپا خورشیدگرفتگی مصنوعی ایجاد می‌کند

🔹 آژانس فضایی اروپا (ESA) درحال آماده‌شدن برای ایجاد خورشیدگرفتگی‌های مصنوعی است تا محققان بتوانند یکی از دشوارترین بخش‌های خورشید را مطالعه کنند: تاج سوزان و داغ آن. برای انجام این کار، آن‌ها تصمیم دارند دو فضاپیمای جداگانه را به فاصله ۱۵۰ متر از هم به مدار بفرستند. دو جسم در یک راستا قرار خواهند گرفت و یکی از ماهواره‌ها همه چیز به‌جز تاج را از ماهواره دیگر مسدود می‌کند. سپس ماهواره دیگر با استفاده از ابزاری به‌نام تاج‌نگار آن را رصد می‌کند. دو ماهواره این مأموریت باید با استفاده از ناوبری ماهواره‌ای، به شکل منظم و با دقت میلی‌متری پرواز کنند.

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فیزیک،پلاسما،لیزر

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فیزیک،پلاسما،لیزر

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Telegram hopes to raise $1bn with a convertible bond private placement

The super secure UAE-based Telegram messenger service, developed by Russian-born software icon Pavel Durov, is looking to raise $1bn through a bond placement to a limited number of investors from Russia, Europe, Asia and the Middle East, the Kommersant daily reported citing unnamed sources on February 18, 2021.The issue reportedly comprises exchange bonds that could be converted into equity in the messaging service that is currently 100% owned by Durov and his brother Nikolai.Kommersant reports that the price of the conversion would be at a 10% discount to a potential IPO should it happen within five years.The minimum bond placement is said to be set at $50mn, but could be lowered to $10mn. Five-year bonds could carry an annual coupon of 7-8%.

♦️ تلاش برای مطالعه دقیق‌تر خورشید؛ آژانس فضایی اروپا خورشیدگرفتگی مصنوعی ایجاد می‌کند

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