Part of the problem is that we haven't sent anything else out that far (cause you know, it's the first). Most of the rest is that the edge of the solar system is much like the edge of our atmosphere: a broad and hard to pin down thing.
I fully expect scientists to be having arguments about this for quite some time.
-Terry
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"so listen up boy, or pornography starring your mother will be the second worst thing to happen to you today"
TF2: Spy
I fully expect scientists to be having arguments about this for quite some time.
-Terry
-----
"so listen up boy, or pornography starring your mother will be the second worst thing to happen to you today"
TF2: Spy