On today’s episode of “What If?” — what if the Apollo 13 astronauts had a 3D printer? Well, for one thing, they may have been able to avoid all the futzing with duct tape and procedure ...

Unlike its Apollo predecessors ... Additionally, the AxEMU uses a regenerable carbon dioxide scrubbing system, which is ...

In 1970, Nasa's Apollo 13 mission captured the ... creating a makeshift adapter for the command module's square carbon dioxide scrubbers to fit the lunar module's round receptacles, using only ...