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: http

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: https://www.nasa.gov/spacetech/niac/2013phaseII_bae.html https://www.nasa.gov/spacetech/niac/2013phaseII_bae.html (It must be annoying when the researchers studying pie-in-the-sky mission architectures get all the clickbait headlines)