这意味着HD 209458b所在的太阳的光线必然先穿过行星的大气层然后到达地球。

This means light from HD 209458b's star must pass through the planet's atmosphere before reaching us.

youdao

这意味着HD 209458b所在的太阳的光线必然先穿过行星的大气层然后到达地球。

This means light from HD 209458b's star must pass through the planet's atmosphere before reaching us.

youdao