But watching the mega-maser respond to the gravity of its host black hole means we can actually measure whether gravity is the same on the other side of the universe.

通过观察巨型脉泽对其黑洞主人万有引力的反应，我们就能够实际测量万有引力在宇宙中的其它地方是否也是一样的。

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In the case of this mega-maser, the light was emitted when the universe was very young — about 10% of its current age.

在宇宙还是很年轻(大约是它目前年龄的10%)的时候，光线从这座巨型脉泽中发出。

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