Let's simplify here. Instead of trying to make a buck before going off to mine our asteroid, let's go there directly.
The reason for this? Too much complexity.
Some additional concerns:
- Using a reflected sunbeam to grow algae 24/7 sounds good, but the additional sunlight may be too much for living things
- The best way to use the reflected sunlight may be to electrify the highway system, but you don't need space solar energy in order to do that. You can use any energy, including fossil. There would still be a pollution concern in this instance, but it would be greatly diminished because of the greatly improved efficiency.
- Other technologies may prove to be better for transportation purposes.
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