2024 - the first sample is handed over by a robot
2025 - alternative designs arrive and also deliver samples
2026 - some of the alternate designs observe it is easier to hijack loads already collected by other robots
2027 - hijacked robots discover ways to retrieve their cargo while damaging the hijackers
2028 - robots begin to group together both for attack and defence
2029 - robots discover they can re-use parts of other robots to improve their capabilities
2030 - robots form societies with trading for both robot parts and moon samples
2031 - NASA completely buried under the amount of samples delivered
2032 - robots begin to look at that big blue thing in the sky and wonder...