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Create: 2025-05-29 Update: 2025-07-10 21:45:29

آیا کهکشان‌های دور سریع‌تر از سرعت نور در حال دور شدن از ما هستند یا خیر؟

برای درک این موضوع؛
تعدادی مورچه 🐜 بروی یک بادکنک در نظر بگیرید.

فرض کنید سریع‌ترین حرکت ممکن مورچه‌ها یک سانتی‌متر در ثانیه باشد. حال اگر دو مورچه از کنار هم عبور کنند؛ و در صورتی که در جهت متضاد هم حرکت کنند، سریع‌ترین سرعت نسبی‌شان، دو سانتی‌متر در ثانیه خواهد بود.

حال بادکنک را شروع به باد کردن بکنید.

می‌دانیم که طبق قرارداد مورچه‌هایی که در سطح بادکنک هستند نمی‌توانند بیشتر از یک سانتی‌متر در ثانیه حرکت کنند.

با این وجود بادکنک در حال انبساط است و فاصله ‌ی میان مورچه‌هایی که بر روی بادکنک هستند، مدام در حال افزایش است.

چنانچه بادکنک سریع‌تر باد شود، سرعت دور شدن مورچه‌ها از هم‌دیگر به بیش از دو سانتی‌متر هم خواهد رسید.

در واقع انبساط فضا نیز به همین شکل هست؛ این کهکشان‌ها نیستند که با سرعتی بیش از نور حرکت میکنند بلکه رنج فاصله میان آن‌ها (یعنی خود فضا) است که با سرعتی بیش از نور افزایش می‌یابد‌.

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How to use Telegram to find people near you

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آیا کهکشان‌های دور سریع‌تر از سرعت نور در حال دور شدن از ما هستند یا خیر؟

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