NASA’s 3D-Printed Habitat Challenge (www.nasa.gov) is a competition to create sustainable shelters suitable for the Moon, Mars or beyond, using resources available on-site in these locations.

The multi-level challenge puts teams to the test in several areas of 3-D printing, including modelling software, material development and construction.

In addition to aiding human space exploration, technologies sought from this competition could also lead to lower-cost housing solutions on Earth, as well as other benefits.

The challenge, which began in 2015, is structured in phases, each with multiple levels. The first two phases — design and creation of structural members — have been completed.

The teams competing in the challenge recently completed the latest level of the competition — complete virtual construction — and the top three shared a $100,000 prize.

They were required to create a full-scale habitat design, using modelling software, building on an earlier stage that also required virtual modelling.

Eleven team entries were scored, and points were awarded for architectural layout, programming, the efficient use of interior space, and the 3-D printing scalability and ‘constructability’ of the habitat.

Teams also prepared short videos explaining their designs, as well as miniature 3-D printed models that came apart to showcase the interior design. Points were also awarded for aesthetic representation and realism.

The 3D-Printed Habitat Challenge will culminate with a head-to-head sub-scale structure print 1-4 May (in Peoria, Illinois) and the awarding of an $800,000 prize.