re: #35 ArchangelMichael

Even a “straight trajectory” would actually be a solar orbit, and since it came from Earth originally, that orbit would intersect Earth orbit with a potential for Bad Things. Regardless, the amount of fuel required to get stuff up into space makes this way too costly which is why I think it would have to wait for a space elevator, or far less likely, antigravity/controlled dark energy.

Now its just better to drill a 2-3km hole into the Laurentian Craton and drop it all down there. Subduction zones would be good too as long as we are reasonably sure that the volcanos above them don’t spit nuclear waste right back out well before it diffuses in the mantle and takes a multi-million year journey to the mid-ocean ridges.

That would work. What about massive space sail craft to get rid of the waste? We could always find one-way astronauts rather easily considering. Or would we have another human emotional component to deal with?