New work offers fresh evidence supporting the supernova shock wave theory of our Solar System's origin

According to one longstanding theory, our Solar System's formation was triggered by a shock wave from an exploding supernova. The shock wave injected material from the exploding star into a neighboring cloud of dust and gas, causing it to collapse in on itself and form the Sun and its surrounding planets.

 One very important constraint for testing theories of Solar System formation is meteorite chemistry. Meteorites retain a record of the elements, isotopes, and compounds that existed in the system's earliest days. One type, called carbonaceous chondrites, includes some of the most-primitive known samples. Read more.

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