Up to the date, we have observed 18 black hole X-ray binary.

到现在为止我们大约已经发现了18颗黑洞X射线双星。

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Globular cluster 47 Tuc is also home to exotic X-ray binary star systems.

球状星团47 Tuc中也存在一些奇怪的紫外双星系统。

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We tested the same POV-Ray binary on VMWare version 4.5.2 using the same distribution.

我们使用相同的发行版本在VMWare版本4.5.2上测试相同的POV - Ray二进制程序。

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Now, an international team of astronomers has trained the Fermi space-based gamma ray telescope on V407 Cygni, a "binary" system comprising a white dwarf star and a red giant companion, 9, 000 light-years away.

BBC: Gamma rays from nova explosion surprise astronomers

The black holes are separated by an estimated distance of less than a third of a light-year - cheek-to-cheek by black hole standards and significantly closer than the postulated binary system spotted by the Chandra X-ray Observatory in 2003.

BBC: Dancing black hole twins spotted