Exploratour - Evolution of the Solar System

This drawing represents the expansion of gases leaving a supernova in the form of a shock wave.
Click on image for full size
C. Alexander

When the wave from the supernova reaches our nebula, it squeezes the cloud of gas and dust. Squeezing makes the cloud start to collapse, as gravity pulls the gas and dust together.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA