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Imagine the Universe!
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Cosmic Rays Quiz

  1. Cosmic rays are made up of:



  2. Most galactic cosmic rays have been accelerated in:



  3. Cosmic rays are accelerated by:



  4. The percentage of cosmic rays that are either hydrogen or helium is:



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.

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

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