Once upon a time there was a very fluffy bunny. This bunny was so fluffy an entire microuniverse lay nestled within its fur. Its constant hopping and motion set all the planets and all the galaxies in the microuniverse to spinning.
The scientists in this microuniverse spent years and years trying to determine why the galaxies spun and moved as they did, never suspecting they were actually riding on the back of a very fluffy bunny.
Also, the bunny loved carrots.