ST. LOUIS – Sky watchers in St. Louis have a chance to see a rare six-planet alignment in the western sky Thursday and Friday evening, with the best viewing about 30 minutes after sunset.
Mercury, Venus, Jupiter, and Saturn will be visible to the naked eye, while Uranus and, in particular, Mercury, require a telescope due to its low position near the horizon. A clear, unobstructed view of the western horizon is key…