Last updated on April 25, 2014 at 1:22 EDT
Galactic Cosmic Radiation
32 of 166

Galactic Cosmic Radiation

January 9, 2013
This graph depicts the fraction of high energy cosmic rays (greater than 100 MeV) that pass through the boundary of the solar system. 100% of them are present outside of the Bow Shock. There is a small dropoff in the number that make it through to the heliopause. More than 50% are stopped between the heliopause and termination shock, which is at approximately 100 AU. This leaves a fraction less than 25% to permeate to the inner solar system. Credit: Southwest Research Institute