whenthecurveslineup.com
2018, September 6: Mercury and Regulus in the Morning Sky
September 6: In the predawn eastern sky, the waning crescent moon (26.0 d, 15%) is on a virtual line that connects the Gemini Twins, Castor (α Gem, m = 1.6) and Pollux (β Gem, m = 1.2). The moon is…