The June 30, 2017, episode of QDL offered a wrinkle in time, of sorts: not only orbiting debris and medieval medicine, but moments in the here and now such as our interview with Keith Bevan of the Coordinate Metrology Society and the UK’s National Physical Laboratory, and an on-the-go version of the Ohno Circle. Here’s a closer look:

“Space Junk: The Cluttered Frontier”
MIT professor Kerri Cahoy and former graduate student Mike Pascual devised a sensing technique, known as laser polarimetry, to detect the surface features of space junk from the surface of Earth, thereby helping spacecraft avoid potentially ruinous collisions.

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