The rocket engines that lauched Apollo 11 towards the moon had 5,600 parts each. 3D-printed equivalents have just 40.
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Three private companies have recently been commissioned to develop nuclear fission thermal rockets for use in orbit around the Moon.
An update of 50-year-old regulations has kickstarted research into the next generation of rockets. Powered by nuclear fission, these new systems could be the key to faster, safer exploration of space.


