Yes. The prefix bi- means two.
Binary stars can be any color that stars can be. There's no need for the two stars in a binary to be the same color.
Binary stars consist of two stars that orbit around a common center of mass. So, a binary star system will always have a total of two stars.
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".
"Binary" means there are two stars. And "protostar" means the stars are in an early, or preliminary, stage.
The masses of the two stars.
Binary stars.
No. A Galaxy contains billions of stars whereas a binary star contains only two stars.
binary stars are two stars that orbit each other while supernovas and novas stars are stars that explode when it runs out of fuel
Yes, all binary stars are part of star systems. Binary stars are pairs of stars that orbit around a common center of mass due to their gravitational attraction to each other. While they may be the only two stars in their system, they are still considered part of a larger system.
Two companion stars are referred to as a binary star system.
Binary