This isn’t really related to Wi-Fi, but it’s still super cool. The Ingenuity helicopter that is stowed away on the Perseverance Mars rover uses commercial-grade parts (some of which were initially purchased from SparkFun for testing), and it runs Linux. Pretty neat! I enjoy stories of advanced organizations using regular hardware to accomplish insane engineering goals. Tangentially related: some previous Mars rovers ran VxWorks, which is the same operating system that many Linksys WRT54G wireless routers shipped with.
If this kind of thing interested you, check out IEEE Spectrum’s article about it.