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Imagine the Universe!
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Diffuse Background Quiz

  1. Above 1 keV, what is the dominant source of the soft X-ray background emission?


  2. At higher energies the sources of the diffuse background are mainly located in our galaxy.


  3. Much of the cosmic gamma-ray emission comes from


Home Imagine Science Special Exhibit Satellites and Data
Dictionary Resources Teacher's Corner Ask an Astrophysicist

Imagine the Universe is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA's Goddard Space Flight Center.

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Project Leader: Dr. Jim Lochner
All material on this site has been created and updated between 1997-2011.

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