### Chinese: 科学家希望了解自从彗星很久以前与地球相撞以来，行星是如何形成的，尤其是地球的形成方式。
### English: Scientists want to understand how planets have formed since a comet collided with Earth long ago, and especially how Earth has formed.
### Errors: There is a critical change of gender pronoun error in the English translation.

### Improved English: Scientists want to understand how planets have formed since a comet collided with Earth long ago, and especially how Earth has formed.
