Two quick questions for many of the teeming millions who are a lot smarter than I;
- Why do planets, suns, galaxies, etc. rotate around their axes?
- Virtually all animals, especially preditors, bear their teeth as a hostile gesture. Genus Homo, also a preditor, does just the opposite; the grin being a gesture of friendliness. How come?
Alan
Regarding your first question: my off-the-cuff answer would be that any solid object has some angular momentum, and it’s just statistically unlikely for that angular momentum to be zero. For galaxies the answer is more complicated, since a galaxy is a collection of objects rather than a single solid object…it presumably has something to do with how galaxies form. (I’ll wait for an astronomer to come by and deal with the question of galaxies more thoroughly…)
Damn, and I thought this thread would be about “turning that frown upside down”.