Lasers? That is so boring. Consider the floating sphere. https://en.m.wikipedia.org/wiki/Advanced_Inertial_Reference_Sphere https://en.m.wikipedia.org/wiki/Adv

Lasers? That is so boring. Consider the floating sphere. https://en.m.wikipedia.org/wiki/Advanced_Inertial_Reference_Sphere https://en.m.wikipedia.org/wiki/Advanced_Inertial_Reference_...