Binary stars.
its two stars that share the same orbit around each other
Binary stars.
Binary Star Systems.See related question
its two stars that share the same orbit around each other
That's known as a binary star system.
When two stars are orbiting around each other, they form a binary star system. These systems are classified based on how close the stars are to each other, with categories like close binaries, wide binaries, and spectroscopic binaries. Binary star systems are important for studying stellar evolution and dynamics.
Yes, and when they do so they are called binary stars (see wiki: http://simple.wikipedia.org/wiki/Binary_star) basically the two masses are attracted by each others' gravitational fields and orbit each other.
A binary star system is two stars that orbit around each other
Two stars that are gravitationally bound to each other are sometimes called "binary stars".
A triple star system is a system of three stars that are gravitationally bound to each other and orbit around a common center of mass. Triple stars can either be hierarchical, where two stars are closer to each other and the third is more distant, or trinary, where all three stars are relatively close to each other. Triple stars are relatively rare compared to binary stars.
Two stars orbiting each other are "binary stars" ...a group of stars near each other, may be formally or informally known as a "cluster".
Two stars that are close together will orbit each other. More precisely, they will orbit around their common center of mass. The two stars are called a binary star in this case.