Astronomers cannot see the planet through telescopes, but they can detect a wobble in the motion of Pegasus 51--caused by the gravitational pull of a massive object circling it.
Astronomers cannot see the planet through telescopes, but they can detect a wobble in the motion of Pegasus 51--caused by the gravitational pull of a massive object circling it.
天文学家不可能借助望远镜看到这颗行星，但他们可以测出天马星座51运行中一种不等速行动——这是由围绕它运行的大量物体的引力所引起的。