Look northeast of bright star Deneb in the constellation Cygnus the Swan.

它们在天鹅座的天津四这颗亮星的东北方。

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One of the best cases known goes by the name Cygnus X-1, because it was the first X-ray source discovered in the constellation Cygnus the Swan.

最经典的例子就是天鹅座X-1，这是在天鹅座星云中发现第一次发现的X射线源。

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It's about 2 light-years long and half a light-year wide. It's located about 2, 000 light years away in the direction of the Constellation Cygnus.

它大约有2光年长、半光年宽，位于天鹅座方向，距地球约2,000光年。

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On Wednesday, Dr. Welsh and his colleagues announced that they have confirmed the existence of two more worlds in distinctive double-star solar systems in the constellation Cygnus.

WSJ: Galaxy Hosts 100 Billion Planets, in New Estimate

On Wednesday, Dr. Welsh and his colleagues announced that they have confirmed the existence of two more alien planets in distinctive double-star solar systems in the constellation Cygnus.

WSJ: Galaxy Hosts 100 Billion Planets, in New Estimate

Herschel will be remembered as the telescope that produced great vistas of gas and dust, as here in the constellation of Cygnus.

BBC: Herschel space telescope to go blind