YOU SAID:

recessional velocity is the rate at which an extragalactic astonomical object recedes from an observer.

INTO JAPANESE

後退速度は、銀河系外天体が観測者から遠ざかる速度です。

BACK INTO ENGLISH

Recession velocity is the speed at which extragalactic objects move away from the observer.

INTO JAPANESE

後退速度は、銀河系外の天体が観測者から遠ざかる速度です。

BACK INTO ENGLISH

Recession velocity is the speed at which celestial bodies outside the galaxy move away from the observer.

INTO JAPANESE

後退速度は、銀河の外側の天体が観測者から遠ざかる速度です。

BACK INTO ENGLISH

Recession velocity is the rate at which celestial bodies outside the galaxy move away from the observer.

INTO JAPANESE

後退速度は、銀河の外側の天体が観測者から遠ざかる速度です。

BACK INTO ENGLISH

Recession velocity is the rate at which celestial bodies outside the galaxy move away from the observer.