YOU SAID:

His spaceship was rocked by the impact, shaking him to his core.

INTO JAPANESE

彼の宇宙船は、揺れ、彼のコアへの影響に揺れるしました。

BACK INTO ENGLISH

His spaceship was swinging, swaying on his core impact has been.

INTO JAPANESE

彼の宇宙船に揺れていた、彼のコアの影響に揺れるされています。

BACK INTO ENGLISH

Swaying in the core of his spaceship was swinging his influence has been.