This video segment adapted from NOVA scienceNOW follows scientists analyzing meteorites—the oldest rocks in the solar system—to determine what triggered the birth of our solar system from a vast cloud ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The shock wave from an exploding star likely helped trigger the formation of our solar system, ...

THE hypothesis of Kant and Laplace that the solar system originated by a gradual process from the contraction of a rotating nebula has become more and more improbable as the theory of such a process ...