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chornedsnorkack
2009-Aug-27, 04:23 PM
What is the density of interstellar environment right upwind of heliopause? What is its speed relative to Sun and what is its direction?

What is the density and speed of solar wind at heliopause?

Suppose that the nature of interstellar environment were to change such that its speed and density increase. Would the cosmic radiation here on Earth change in any way unless and until the heliopause should shrink inside Earth orbit?

antoniseb
2009-Aug-27, 04:29 PM
... Would the cosmic radiation here on Earth change in any way unless and until the heliopause should shrink inside Earth orbit?

By change in any way, are you asking if it could go up to dangerous levels?

Concerning the questions leading up to this, I don't personally have handy answers, but you might find them on the Voyager mission website.