铺子
发表于 2025-3-25 05:50:33
Riding a Beam of Lightut the surface area of the sphere is much larger the farther you get from the Sun. The only way that the amount of sunlight can remain constant, which we intuitively know it must, yet cover a much larger area, is for the amount of sunlight per unit area to decrease.
我说不重要
发表于 2025-3-25 08:36:35
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cauda-equina
发表于 2025-3-25 15:38:30
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glamor
发表于 2025-3-25 17:41:59
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mercenary
发表于 2025-3-25 20:37:50
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FOR
发表于 2025-3-26 03:07:00
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FAST
发表于 2025-3-26 06:18:01
The Rocket: How It Works in SpaceThe rocket is a most remarkable device. Its early inventors could not have guessed that it would ultimately evolve into a device capable of propelling robotic and human payloads through the vacuum of space. In fact, the rocket actually works better in a vacuum than in air!
肿块
发表于 2025-3-26 11:46:01
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蚀刻
发表于 2025-3-26 12:53:21
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Peak-Bone-Mass
发表于 2025-3-26 18:53:21
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