Quantum Core is a company that aims to mine asteroids for valuable resources. They plan to target near-Earth asteroids made of metals like platinum, nickel, and iron. An ideal asteroid for Quantum Core would be medium-sized and have an orbital period and velocity favorable for retrieval. One example asteroid they may target is 1685 Toro, which is a Mars-crossing asteroid with a 5:8 orbital resonance with Earth. While the technology for asteroid mining is still in development, Quantum Core is working on solutions like solar-powered robotic systems. There are also political and environmental factors like ownership laws and potential pollution to consider.