How Do Double Stars Form?

There are lots of double star systems out there, something we really didn't imagine until recently. So i guess maybe the question is, how do they form? Like, why didn't they just form as one star? How did ey come to have two stars? Ry w, you have to imagine how solar systems form,. You have this big cloud of gas and dust as initial building blocks of the solar system. What makes that collapse into a star? Sometimes you get like a shock wave that comes through fromlike a super nova or something that triggers this collapse.