[Shryke]

Think of the most valuable element you can.

Californium! Ofcourse I have no idea if it is more prevalent in space than here on earth. However, certain elements/compounds, like helium 3, only exist in necessary quantities "out there", can be brought down to surface at reasonable cost, and are extremely valuable.

[from occupied ga]

However, certain elements/compounds, like helium 3, only exist in necessary quantities "out there", can be brought down to surface at reasonable cost, and are extremely valuable

I missed seeing the He³ reservoirs on Mars. Here I just thought it was rocks, dust, ice and CO₂ And I also missed the mechanism where you can bring things from space to earth at a reasonable cost. All these years I was laboring under the misapprehension that the moon rocks were expensive because it cost so much to get them.