A beautiful pairing of planets happens this month in the western and southwestern sky after sunset. Crimson Mars and golden Saturn come together and share their region of the sky with two rivals: fiery Antares (the Alpha [α] star in Scorpius the Scorpion) and topaz Arcturus (the brightest star in Boötes the Herdsman). These competitive combinations have much to teach us about how our eyes perceive color at night as well as how our ancient ancestors linked themselves to the stars.
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