Cosmic Rays and the Heliopause

  • Released Friday, October 1, 2010
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This animation shows how variations in the size of the heliosphere affect how many cosmic rays reach Earth. As the heliosphere expands, it blocks more cosmic rays, and as it contracts, more cosmic rays get through and can affect astronauts and satellites.

Cosmic ray flux animation

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Please give credit for this item to:
NASA/Goddard Space Flight Center, Conceptual Image Lab

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This page was originally published on Friday, October 1, 2010.
This page was last updated on Wednesday, December 2, 2015 at 10:26 AM EST.