A practical near-term application of this tech is precision formation flying of satellites -- Young Bae has been developing test systems for over a decade: <a href="https:&#x2F;&#x2F;www.nasa.gov&#x2F;spacetech&#x2F;niac&#x2F;2013phaseII_bae.html" rel="nofollow">https:&#x2F;&#x2F;www.nasa.gov&#x2F;spacetech&#x2F;niac&#x2F;2013phaseII_bae.html</a><p>(It must be annoying when the researchers studying pie-in-the-sky mission architectures get all the clickbait headlines)