Scientists at NASA’s Goddard Space Flight Center have created a concrete-like substance using a mixture of carbon nanotubes, epoxy and a crushed rock material, and built a 3-meter dish.

Then they added more liquid epoxy to its surface and spun it, coating it with aluminium in a vacuum. They believe the process could be scaled up to produce 20- to 50-meter-wide telescopes on the Moon.

The technique could also be used to build other structures on the Moon, including reflectors for an array of solar panels, as well as habitats, or igloos, for astronauts.