by Deane Morrison
September opens with Venus hosting winter constellations in the eastern predawn sky. West of the planet, the bright star Procyon, in Canis Minor, the little dog, rises at almost the same time as Venus, followed about 40 minutes later by the brightest of stars: Sirius, in Canis Major, the big dog.
As the month goes on, the winter stars sweep westward; Venus drops toward the sun, rising later every morning; and the spring constellation Leo, the lion, becomes the planet’s new starry companion. In mid-September, Mars and Mercury enter the morning sky over the eastern horizon. Mars is distant and dim, and it climbs slowly. But nearer, brighter Mercury, as usual, quickly pops (up) and drops. On the 16th, Mercury passes close to Mars in the sun’s foreglow.The content you are trying to access is only available to members. Sorry.