reply to post by TriForce
Just as an addition to the information already provided by another poster, there is more to it than what class of emission is being cast off.
In order to ascertain the danger presented by a CME or any other solar activity, it is important to know also which direction particle emission is
traveling in. Space is of course, rather large, and such incidents can occur very easily without even scuffing our atmosphere. Consider for a moment
the size of our planet. The Earth is , near as damnit, 40,000 kilometers, or 29,400 miles around its fattest part, the equator. Its total surface area
is roughly 500,000,000 kilometers. That , one would have thought, presents quite a sizeable target. However, the Sun is 4,379,000 km in circumference,
and ITS surface area is 6,078,747,774,547 km2.
Now, imagine that you are a CME. I know, its hard, but have a crack. You can be anything from the size of North America, (pretty small) to many times
the size of our planet (pretty big) But staring out at the void of space, from any one of those 6,078,747,774,547 square kilometers, you can see just
how easy it would be to miss the insignificant speck of the Earth. You might start your journey from the other side of the sun for instance, or head
straight out of the top of the sun, or what we percieve as the bottom, the left , the right, and all the myriad variations therein, and STILL not hit
this planet.
In actual fact, the sheer size of a CME or other solar incident is of almost zero consequence. The only important factor where such things are
concerned is this:
Is the emission of matter from the sun, somehow pointing directly at this tiny little dot we call a world, rather than being pointed at any other
region of space. Lets face it, theres more space than Earth, so its easy to see from a stand point of probability how these things completely miss us
pretty often !