And in case anyone doesn't click on through that Country Joe site Joe Offer gave there, here is this picture of where we all live

As Country Joe puts it: "As you are thinking about the Columbia astronauts and the meaning of their sacrifice, you might want to look at this incredible view of the lights of Earth at night which they and their compatriots helped bring us." It takes a little bit of time to dowload, but it's worth the wait. (I think that's probabaly a typo for "companions".)