Venus, Mars, and the Moon Go to Sleep

A couple of weeks ago, the interplay of the inexorable dance of gravity and the perspective brought by geometry combined to bring three celestial objects together: Venus, Mars, and the Moon. They all appeared very close together, in an event technically called an appulse, but what most people more casually call a conjunction. Unfortunately it was cloudy and/or snowing here in Colorado, so I couldn't see it for myself, but people from all over the world took pictures and posted them to Twitter an...