Are binary stars common space?

Yes, binary stars are common in space.

You need a stronger telescope than ordinary telescopes to see if one is a binary star. Like, you can't get these kind in shops… you have to make them, probably:-)

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There are stars in space because each one is a sun. As you probably know, we are in the milky way. Inside the milky way are billions of solar systems, and each one has its own sun. The suns are a lot...

stars are balls of dust light and chemicals they are bright to us because of an optical illusion. in the day stars are over taken by the sun so you cant see them they don't necessarily have a reason...