If you want to see science fiction at work, visit a modern machine shop, where 3-D printers create materials in just about any shape you can imagine. NASA is exploring the technique—known as additive manufacturing when used by specialized engineers—to build rocket engines as well as potential outposts on the Moon and Mars. Nearer in the future is a different milestone: NASA’s Perseverance rover, which lands on the Red Planet on Feb. 18, 2021, carries 11 metal parts made with 3-D printing.
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Source: Phys.org