A binary star is a system of two stars gravitationally bound together that are constantly orbiting each other.
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Stars found in pairs are called binary stars. Binary stars orbit around a common center of mass due to gravitational attraction between them.
not a fancy name but its called a star cluster.
Two stars that are gravitationally bound to each other are sometimes called "binary stars".
Stars found in pairs are called binary stars. Binary stars are gravitationally bound to each other and orbit around a common center of mass. There are different types of binary systems, such as visual binaries (able to be resolved with a telescope) and spectroscopic binaries (detected through Doppler shifts in their spectra).
Two stars orbiting each other are "binary stars" ...a group of stars near each other, may be formally or informally known as a "cluster".
The matter phase found in stars is called plasma. Plasma is the fourth state of matter, consisting of ionized gas with positively and negatively charged particles that make it highly conductive and responsive to electromagnetic fields.