ACL 123. Completion of the ACL 19 prompted the goal of stabling the 24 Issues of the 2010 – 2011 Dissolution of the Celestial Spheres under the Annie Cameron Library umbrella before World Metrology Day 2019 May 20. DCS 10 – 11 takes you on a real-time ride from the Saturn system to the DIE (Deep Impact Epoxi) flyby of comet 103P/Hartley 2.