A system of two stars in which one star revolves around the other or both revolve around a common center.
- ‘In a binary star system where one star is normal and the other is a black hole, ‘matter will flow off the star onto the black hole,’ Morgan said.’
- ‘Near the geographic center of the galaxy was a binary star system called Theralia.’
- ‘Most, though, are happy to have Manrique take them through an extended gamut of the things we'd seen at Kitt Peak: whatever planet's most prominent, some globular clusters, nebulae, a galaxy or two, binary stars, the moon.’
- ‘In contrast, in a binary star system both components emit their own light, making possible much larger amplitudes in the variation of the total light received in our telescopes.’
- ‘Neutron stars in binary star systems, however, can reverse this trend and speed up with the help from the companion star.’
binary star/ˈbīnərē ˌstär/
We take a look at several popular, though confusing, punctuation marks.