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Binary stars can be used to calculate the mass of stars.

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Answer:

C) mass is the correct answer.

Explanation:

A binary star is made up of two stars revolving a common core of mass. Binary star systems give the most reliable means for scientists to find out the mass of a star.

Binary stars can be used to calculate the mass of stars by determining the

  • size of orbit
  •  speed of the orbitals stars
  • orbital periods.

when the binary system pulls on each other than the scientists can determine the size, and from this characteristic mass of the star is calculated.

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