This drawing represents the expansion of gases leaving a supernova in the form of a shock wave.
Click on image for full size
Scientists believe that the solar system was formed when the
cloud of gas and dust was disturbed, perhaps by the explosion of a supernova. As with many explosions, such an explosion creates a shock wave. The shock wave propagates through space, dissipating only slowly, with immense distance from the explosion.
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Shop Windows to the Universe Science Store!
Learn about Earth and space science, and have fun while doing it! The games
section of our online store
includes a climate change card game
and the Traveling Nitrogen game