Carl Sagan Explains Your Mother

Consider the scale of the universe. If the Earth were the size of a marble, Jupiter would be approximately the size of a grapefruit, while the sun would be the size of a humble exercise ball. From there, one can extrapolate just how vast our solar system, our galaxy, and our universe really are.
But this raises the question: How fat is your mother?
 Well, if the Earth were the size of a marble, the best estimate we have so far is that your mother would be the size of a rusty old refrigerator filled to the brim with single-serving cups of pudding.
Though this is an illuminating analogy, however, the truth is that science has only just begun to comprehend how fat your mother is. Lost somewhere between immensity and eternity is your mother. A single grain of sand: as much as it is small, your mother is fat. But how did your mother get so fat? To answer this, we must go back billions of years.  continue