A triple star system.
Polaris (the North star - Alpha Ursae Minoris) is a triple star system, but appears to us as a single star. Alpha Centauri is also another triple star system. And there are many more.
they collect particals and form stars close together
Roughly half of all stars in the galaxy are estimated to be part of binary or multiple star systems. This means approximately 50% of stars are binary stars.
Planets are usually much smaller than stars, certainly for our solar system. For another solar systems you might find a very large planet and in others systems you might find a very small red dwarf star or a small dense neutron star that has come to the end of its life. Here, the large planet of one system might be larger than the star of another.
In our Galaxy? well as there is no real number as to how many stars we have, scientist believe that there are over 1 billion or 1 000 000 000 stars in the milky way galaxy.
They are star systems comprising three stars which are orbiting one another. A notable example is Polaris.
On average, it is believed that about 55% of all stars are in multiple star systems.
A good rule of thumb: Of the stars in the sky 1/2 are in double star systems Of the double stars in the sky 1/3 are in triple star systems Of the triple stars in the sky 1/4 are in quartenary systems ad infinitum It's not precisely correct, but uncertainty in these numbers are so large that it is within the error bars.
It varies.About 50% of all star system have a single star, the rest are usually binary stars, though there are multiple > 2 star systems.
A system with two stars is called a binary star system. A system with three stars is called a ternary system or a trinary system - both names mean the same thing. Beyond three stars there are quaternary or quadruple systems which have four stars, quintuple systems which have 5 stars and so on and so fourth.
Stars with three names typically refer to binary or multiple star systems where each component star has a separate designation. These systems are commonly named using a combination of Greek letters or a number followed by the name of the constellation they are found in, like Alpha Centauri or 61 Cygni.
A system composed of more than two stars is called a multiple star system. This can include triple star systems (trinaries), quadruple star systems (quadrinaries), or even more complex configurations with numerous stars orbiting each other.
If you mean within our own solar system, then the answer would be no; there is only one star in our solar system (the sun). Other solar systems can have more than one sun (or star) at it's centre, and are known as either binary stars (when there are two), triple stars (when there are three), etc., or simply as multiple star systems (when there are more than three).In terms of the number of stars within our own galaxy (the Milky Way galaxy), there is estimated to be anywhere from 100-400 billion stars.
A star system can have two or more stars. A star system with two stars is called a binary star system.
Three physical factors that determine a star's brightness are its temperature (hotter stars are brighter), size (larger stars are generally brighter), and distance from Earth (the closer a star is, the brighter it appears).
Lots of them. One nearby example is Alpha Centauri. Another,allegedly, is Sirius...
Polaris (the North star - Alpha Ursae Minoris) is a triple star system, but appears to us as a single star. Alpha Centauri is also another triple star system. And there are many more.