John Lennon wrote, “She’s so heavy,” and suddenly, in the middle of the refrain, she was. As though Jupiter broke free, soared past the moon capturing the earth in its wake. In an instant, 9.8 m/s^2 ramps to 12.7 m/s^3, 12.7^4 m/s^10, 12.7^4^4 m/s^10^2 and…