no matter how chaotic and unstable the orbits of these three gravitational bodies are, their centre of gravity (centroid of the triangle) always remains stationary and fixed in space
In 1937, the Italian physicist Ettore Majorana proposed the existence of hypothetical fundamental particles that were their own antiparticles. No such particle has ever been seen. One year after his proposal, Majorana mysteriously disappeared. https://t.co/QUP5NKW7CD