binary star

基本解释

Binary star systems are common in the galaxy.
在星系中双星系统是很常见的。
But a binary star—two gravitationally locked stars that orbit each other—"could do it, and a star that already has at least one planet," he said.
“但是一颗双子星——两个彼此被对方引力控制而绕对方旋转的恒星——就能够做到，而且一颗恒星至少有一颗行星，”他说。
As for the spiral itself, current supposition is that this is the result of a star in a binary star system entering the planetary nebula phase, when its outer atmosphere is ejected.
至于螺旋本身，最近的推测是这是双子星系统中的一个恒星进入行星星云阶段的结果，此时它的外层大气会被喷出。

Thus it is that a neutron star in a binary star system gets to spend its retirement years as a millisecond radio pulsar.
ECONOMIST: The dizziest, giddiest stars
But many stars are partnered in binary star systems.
ECONOMIST: The dizziest, giddiest stars
Secondly, the detection of multiple planets demolishes once and for all the lingering doubts of some astronomers that the single planets found around other stars are not planets at all, but small, faint components in otherwise conventional binary star systems.
ECONOMIST: Planet hunting

a double star system comprising two stars orbiting around their common centre of mass. A visual binary can be seen through a telescope. A spectroscopic binary can only be observed by the spectroscopic Doppler shift as each star moves towards or away from the earth (Sometimes shortened to binary)&rarrsee alsooptical double star ,eclipsing binary