Sun pillars happen when sunlight reflects from plate-like ice crystals, drifting through Earth's atmosphere with a horizontal orientation, gently rocking from side to side as they fall.
If your browser or smart phone is set up to view it, this 360 video will let you virtually explore a Mars simulation facility at NASA's Jet Propulsion Laboratory, where engineers are practicing for an upcoming Mars lander mission.
Boats moving through water make bow waves. Objects in space, including Earth, make them, too. Even the moon's shadow - penetrating Earth's atmosphere during a total solar eclipse - creates moving bow waves.