Create: 2021-02-03 Update: 2025-07-01 09:15:21

📡 #رصد_کیهان: ۰۶ 🔗 | در کیهان قابل مشاهده با قطر ۹۲-۹۳ میلیارد سال نوری، که قطر آن در هر لحظه هم افزایش می‌یابد، بیش از ۱۰۰ میلیارد کهکشان وجود دارد؛ هر کهکشان نیز حداقل، تقریبا، ۱۰۰ میلیارد ستاره دارد.

«گروه محلی» که کهکشان راه شیری و حدود ۵۰ کهکشان دیگر با گرانش به یکدیگر گره خورده‌اند را یک خوشه‌ می‌توان در نظر گرفت؛ این خوشه، تحت تاثیر گرانشِ عظیم خوشهٔ مجاور با نام «سنبله» قرار داره—خوشهٔ سُنبُله [Virgo] شامل ۱۳۰۰ تا ۲۰۰۰ کهکشان است و فاصلهٔ مرکز آن تا زمین ۶۰ میلیون سال نوری‌ست.

🔘 خوشهٔ سنبله و خوشهٔ محلی (که شامل کهکشان راه شیری‌ست) همگی در درون « اَبَر-خوشه سنبله» قرار می‌گیرند. — 🌐 — [پست قبل: 🔗]

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Telegram and Signal Havens for Right-Wing Extremists

Since the violent storming of Capitol Hill and subsequent ban of former U.S. President Donald Trump from Facebook and Twitter, the removal of Parler from Amazon’s servers, and the de-platforming of incendiary right-wing content, messaging services Telegram and Signal have seen a deluge of new users. In January alone, Telegram reported 90 million new accounts. Its founder, Pavel Durov, described this as “the largest digital migration in human history.” Signal reportedly doubled its user base to 40 million people and became the most downloaded app in 70 countries. The two services rely on encryption to protect the privacy of user communication, which has made them popular with protesters seeking to conceal their identities against repressive governments in places like Belarus, Hong Kong, and Iran. But the same encryption technology has also made them a favored communication tool for criminals and terrorist groups, including al Qaeda and the Islamic State.

📡 #رصد_کیهان: ۰۶ 🔗 | در کیهان قابل مشاهده با قطر ۹۲-۹۳ میلیارد سال نوری، که قطر آن در هر لحظه هم افزایش می‌یابد، بیش از ۱۰۰ میلیارد کهکشان وجود دارد؛ هر کهکشان نیز حداقل، تقریبا، ۱۰۰ میلیارد ستاره دارد.

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