This year, these two planets will meet three times - quite an unusual situation - before spinning off in space their separate ways, not to meet again until 2022.

今年这两颗行星在分离(再次相会将在2022年)前将三次相遇，十分少见。

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Most years when these two planets meet, they meet only once and then go their separate ways. But in 2009, they will meet three times in conjunction, on May 27, July 10, and December 21.

大多数年份这两个行星只相遇一瞬就分道扬镳，但2009，他们将相遇3次，在5月27,7月10和12月21。

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The discovery of a dozen of these extra-solar planets in the past three years in no way diminishes astronomers' delight in each new discovery.

CNN: Astronomers spy new neighbors outside solar system