This 3D printer creation by Joshua Harker, shown in Paris in November, was not printed in space. (Joel Saget/AFP/Getty Images)
Three-dimensional printing has been a hot topic lately, with Home Depot even starting to sell the machines in some stores and the National Institutes of Health maintaining an exchange for 3D printer files. What about using 3D printing in space? There are potential benefits, but we still don’t know the full scope of this technology, and its capabilities in the short-term have been exaggerated, says a new report by the National Research Council.