When a forming planet is big enough, it starts to clear its path around the star it orbits. ... A planet's gravity pulls equally from all sides. Gravity pulls from the center to the edges like the spokes of a bicycle wheel. This makes the overall shape of a planet a sphere, which is a three-dimensional circle.
I believe it was the Arab Oil Embargo, because during this time we weren’t receiving as much oil so the speed limit had to go down to 55mph to preserve what we did have.
