Understanding waxing crescent moonPosted: May 6, 2011
Ever notice that you don’t ever actually see the waxing crescent moon until right around sunset? Here’s the explanation why, from EarthSky.org:
At [waxing crescent], the Earth, moon and sun are located nearly on a line in space. … But a waxing crescent moon is far enough away from that Earth-sun line to be visible near the sun’s glare – that is, in the west after sunset. This moon phase is seen one day to several days after new moon. On these days, the moon rises one hour to several hours behind the sun and follows the sun across the sky during the day. When the sun sets, and the sky darkens, the moon pops into view in the western sky.