solar nebula solar nebula solar nebula nebular hypothesis of solar system formation solar nebula la matière primordiale solar nebula solar nebula solar nebula nebular hypothesis of solar system formation stellar nebula's stellar nebula's solar nebula primordial stuff pre-solar nebula la matière primordiale primordial stuff core accretion stellar nebula's solar nebula pre-solar nebula solar nebula solar nebula nebular hypothesis of solar system formation solar nebula primordial stuff nebular hypothesis of solar system formation nebular hypothesis of solar system formation dust solar nebula dust pre-solar nebula solar nebula solar nebula solar nebula pre-solar nebula Kant-Laplace jättelika instabila gas och stoftmoln nebulosa solar solar nebula dust solar nebula Solar nebula solar nebula pre-solar nebula pre-solar nebula solar nebulae solar nebula solar nebula stellar nebula's solar nebula formation solar nebula Solar Nebula solar nebula solar nebula dust solar nebula solar nebula Solar Nebula solar nebula 'swirling nebula' or 'protoplanetary-hypothesis solar nebula solar nebula