Sounds like a job for a quantum computer model.<\/p>\n\n\n\n
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Originally shared by Kam-Yung Soh<\/strong><\/p>\n\n\n\n <\/p>\n\n\n\n Lots of trade-offs: weight vs reflectivity, etc.<\/strong> “It has been about two years since Yuri Milner announced his most audacious piece of science-focused philanthropy: Breakthrough Starshot, an attempt to send hardware to Alpha Centauri by mid-century. Although the technology involved is a reasonable extrapolation of things we already know how to make, being able to create materials and technology that create that extrapolation is a serious challenge. So much of Breakthrough Starshot’s early funding has gone to figuring out what improvements on current technology are needed.<\/p>\n\n\n\n <\/p>\n\n\n\n Perhaps the least well-understood developments we need come in the form of the light sail that will be needed to accelerate the starshots to 20 percent of the speed of light. We’ve only put two examples of light-driven sails into space, and they aren’t anything close to what is necessary for Breakthrough Starshot. So, in this week’s edition of Nature Materials, a team of Caltech scientists looks at what we’d need to do to go from those examples to something capable of interstellar travel.<\/p>\n\n\n\n […]<\/p>\n\n\n\n Overall, the paper does a good job of laying out what we’d need to know to start choosing materials for a Breakthrough light sail. But it also highlights that this isn’t a matter of finding the one perfect solution; instead, it’s about managing multiple, sometimes conflicting priorities and engineering a solution that partially satisfies all of them. “We argue that a successful design of the light sail will require synergetic engineering,” the authors conclude, “simultaneous optimization and consideration of all of the parameters described above.””<\/p>\n\n\n