Kepler’s Song

(to the traditional tune 'Down in/to the River')

As I look out to the milky way, Studying the heaven’s every day
And who shall map, the starry sky, Kepler show me the way
             (mark the planets down)

Oh planets, let’s go round, let’s go round
Don’t you wanna go round, Oh planets let’s go round
Round in your orbits today,

Oh comets, let’s go round, let’s go round
Don’t you wanna go round, Oh comet’s let’s go round
Highly elliptic orbital ways,

Oh black-holes, let’s go round, let’s go round
Don’t you wanna go round, Oh black-holes let’s go round
Swallowing all in your way,