Cygnus X-1 is one of the most likely black hole candidates.

天鹅座x - 1最有可能是一个黑洞候选体。

youdao

In the case of Cygnus X-1, perhaps little of that matter actually makes it in.

对于天鹅座x - 1，也许只有少量的物质真正落进去。

youdao

Confirmation that black hole jets may create expanding shells has come recently from the discovery of shells surrounding Cygnus X-1.

黑洞喷流或许产生了不断膨胀的壳层，这一点最近得到了证实，因为天鹅座x - 1周围已经发现了壳层。

youdao

Called Cygnus X-1, it is about 6, 100 light years away.

WSJ: NASA NuStar Telescope to Hunt for Black Holes