Did you know? Why do stars twinkle? It's actually due to our atmosphere! As starlight passes through Earth's atmosphere, changes in air density cause the light to refract, making stars appear to twinkle. In space, stars shine steadily!

你知道吗？星星为什么闪烁？实际上是大气造成的。星光经过地球的大气层时，因大气的密度变化，导致光线折射，使星星看起来像是在闪烁。其实星星在宇宙中是稳定发光的！

忙录一整天，看一部电影放松一下

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