Just ahead of the Super Bowl, here's the fascinating science behind a football spiral, with input from a physics professor. The ball turns over "because the onrushing air exerts torque," he says.

But for the football, that line is defined by the air flow around the ball as it travels. Gay, Price and Moss did theoretical calculations and computer simulations to put the theory to the test ...

Throwing the perfect football spiral might seem like something reserved for Super Bowl quarterbacks. But with some practice and science know-how, you too can chuck up the perfect spiral.

Of course AJ Dillon's son can practically throw a spiral before he turns 2. Sure, he did it with a miniature football. But, also with a turtle plushie pacifier. Impressive. "Excited for this next ...

Of course AJ Dillon's son can practically throw a spiral before he turns 2. Sure, he did it with a miniature football. But, also with a turtle plushie pacifier.