The Big Bang theory suggests that 15 to 20 billion years ago the universe came into being as a result of a big explosion. The Steady State theory claims the universe has always existed and that all matter in it is created continuously, a little at a time.
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The StarChild site is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), within the Astrophysics Science Division (ASD) at NASA/ GSFC.
StarChild Authors: The StarChild Team
StarChild Graphics & Music: Acknowledgments
StarChild Project Leader: Dr. Laura A.
Whitlock
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