A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Frank Reed
Date: 2020 Oct 18, 15:58 -0700
Here's an "article" about a patent for a smartphone celestial navigation accessory. Bear in mind that the source is trying to help market US govt patents, so this is not a news source. They do provide a link to the patent. What have they patented? Anything??
As long as I'm here, si.edu has a nice article about R2-D2. That was the nickname for the celestial turret in the SR-71. It was a robot that sat behind the cockpit, so... R2-D2. Get it?