Not only is HM Cancri the fastest binary star system every discovered, but it is almost the fastest binary star system possible.

双星HM Cancri不仅是已经发现的运行最快的双星系统；然而它们几乎又是太空中可能具有的运行最快的双星系统。

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Thus it is that a neutron star in a binary star system gets to spend its retirement years as a millisecond radio pulsar.

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This follows the discovery last year by Maciej Konacki, of the California Institute of Technology, of a gaseous giant orbiting a star that is itself orbited by a binary-star system.

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The pulsar and white dwarf pair emit gravitational waves and the binary star system gradually loses energy.

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