For the science lovers: The roundest object in the world.

wonder how well that would or could be used as a cannon ball would it fly better than the average cannon ball the same or worse , I am just a huge fan of cannons or anything loud that goes bang , still pretty cool . Like the base ball that they got to go mach 1 than splat using an air cannon or the bb they got to over mach 4 .
 
So I spent 10 minutes watching that video. Turns out it’s super old, and now I need to know if they ever utilized the featured silicon orb to redefine the weight of a kilogram.
To the search engine!!!

Edit; for anyone curious, apparently they switched the weight of a kilogram over to this standard on May 20, 2019.
 
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