Ah yes, the entirely viable project of moving water from a bone dry vacuum rock to a planet 2/3 covered by water. Water as a space resource is primarily talked

Ah yes, the entirely viable project of moving water from a bone dry vacuum rock to a planet 2/3 covered by water. Water as a space resource is primarily talked about for use in space. I'm not sure it would be viable to return gold from the moon even if the moon was made of solid gold. It turns out it's a lot cheaper to return stuff from the moon, than it costs to send it to the moon. This is especially true if the stuff is dead, and you don't mind subjecting it to 10's of thousands of g's and you can use electromagnetic accelerators running in free vacuum on the surface, instead of rockets.