NGC 47造句怎么写

NGC 4697 is beyond this frame above and to the left, but a smaller irregular galaxy NGC 4731a can be seen near the bottom in impressive detail with its own young blue star clusters.

The faint, wide arcs or shells of NGC 474 could have been formed by a gravitational encounter with neighbor NGC 470.

NGC 470暗淡而巨大的弧圈或壳可能是与比邻星系NGC 470之间的引力碰撞形成的。