Now, the period of an electron is well under a millionth of a second, the human pulse is roughly one per second, and a single rotation of a galaxy takes well over a million years. (religion-online.org)
We had seen a fertility specialist and had taken a single rotation of the prescription drug Clomid since my period went AWOL for months after many years on the pill; but we were not undergoing official treatment. (parents.com)
Maybe the rules are different for galaxies, where the typical span of a single rotation brackets the time from the dawn of the dinosaurs to the moment you're reading this page. (discovermagazine.com)