What about asteroids? It should be a lot less delta vee and gentler [1] gravity well to get there or to send material to Earth... https://iopscience.iop.org/art

What about asteroids? It should be a lot less delta vee and gentler [1] gravity well to get there or to send material to Earth... https://iopscience.iop.org/article/10.3847/PSJ/ac235f https://iopscience.iop.org/article/10.3847/PSJ/ac235f 1: As opposed to the steep gravity well of the moon which requires multi km/s chemical propulsion to land, for asteroids you can do a lot with much more efficient chemical propulsion and only a small kick with chemical propulsion.