Why Are Stars Star-Shaped?

Great new video from MinutePhysics that asks why we draw stars as star-shapes, when they’re really just spherical orbs of superheated plasma (and those are much easier to draw, by the way).

We know that stars twinkle because of the distortion caused by our atmosphere miles above your head, but that’s not what gives them their apparent star shape. If that were the case, then why do Hubble images also flare out? Unless J.J. Abrams works for NASA or something…

The actual answer lies in your very own eye. I won’t spoil the rest, but after my video this week (which looked into why goats have such weirdly shaped rectangular pupils), I have to know: What does the ungulate astronomer see?

PS - Which came first, stars… or stars?