Mars, for example, is the closest celestial body ... Humans of the future would have to go directly to this remote region to select the ideal asteroid and attach a propellant to it.

While SpaceX CEO Elon Musk has previously discussed unmanned missions to Mars, his announcement on X marks the first mention of robots joining the journey to the red planet.

Tesla's Optimus robots were originally pitched as household assistants, but a new plan for them is out of this world.