How Do Satellites Stay in Orbit Without Falling?
卫星如何绕地球运行而不坠落?
课文音频
Listen to the full story · 完整逐句/整段音频可在解锁后使用。
您仍可先看下方课文摘要;在阅读器可查看该书试读与权益说明。
课文
从第 4 课起,导读页仅展示部分正文,便于您了解难度与风格。
-
Satellites don’t defy gravity — instead, they fall continuously toward Earth while moving sideways so fast that the planet curves away beneath them.
-
This balance between forward velocity and gravitational pull creates a stable orbit, similar to how the Moon circles Earth.
Unlock full vocabulary & bilingual guide · 完整课文、逐句音频与全部译文请在解锁学习权益后于阅读器中查看。
Improve faster解锁本课完整体验