重じゅう力りょく圏けん

noun

gravitational sphere; gravitational field

Astronomy term referring to the region around a celestial body where its gravity dominates. Often used in contexts like planetary science and space exploration.

See also: 引力圏

• 地ち球きゅうの重じゅう力りょく圏けんを脱だっ出しゅつするには、かなりの速そく度どが必ひつ要ようだ。

  To escape Earth's gravitational sphere, considerable speed is required.

• その探たん査さ機きは火か星せいの重じゅう力りょく圏けんに入はいった。

  The probe entered Mars' gravitational field.