Hello! I didn't see any suggestions, so here we go!
Prerequisites: Space Program, Moon Landing
Cost: $500 million to $750 million, 50000 uranium, 15000 steel, 15000 aluminum, 10000 gasoline, 1000 iron, 1000 bauxite
Effects: Certain Revenue added per turn, resources would be extracted as well*, and could possibly add more resource not available on Earth rss such as Mercury, Gold, etc
*Would require rocket ships to transfer the resources or you don't make any, have a set capacity per rocket ship
Rocket Ships: Brings rss back to your nation, require the improvement: "Launchpad" to operate. 10 rockets per launchpad, maximum 5 launch pads per city. The capacity of a single rocket ship varies from 500-1000 rss.
Espionage Risks: With great reward, there is great risk as well. A new espionage operation, (leave your name suggestions in the comments please) would allow any rss stacked up on the asteroid to be sent to the nation conducting the espionage. Rss are stacked up by not collecting them with the capacity or amount of rocket ships you have.
A costly project indeed, but could possibly the most rewarding
Let me know your thoughts! (Please let me know if the Cost is too much, I will adjust as necessary) @Alex, good idea or bad idea?