Credit: Hubblesite September Evening Planets Just after sunset early in the month, Saturn appears low above the western horizon. As the month progresses, it will get harder to spot Saturn as it slips closer to the setting Sun. September Constellations and Deep-Sky Objects September nights feature the "wet quarter" of the sky. Two neighboring constellations bear ancient references to water. Aquarius is one of the oldest constellations. In ancient mythologies, Aquarius is the god of the waters. Look for the Water Jar, a group of stars shaped like a Y. Nearby lies the great constellation Capricornus. Known in mythology as the Water Goat, it represents a creature that fed and watered the infant Zeus, ruler of the Greek gods. Algedi is the brightest star in Capricornus. It's visible in binoculars as an elongated star. This odd shape is due to a visual trick. From our distant vantage point, two unrelated stars appear to be close together. A rich, compact cluster of stars can be seen in Aquarius. Known as M2, it contains about 150000 stars about 37500 light-years away. Binoculars present it well, but a small telescope reveals much more detail in the cluster's compact center. Capricornus also hosts a dense cluster of stars, M30. A small telescope easily resolves individual stars in the cluster. September Morning Planets Majestic Jupiter rises in the east by midnight and goes on to dominate the southern sky in the hours before dawn. Binoculars reveal Jupiter's largest moons. A ...
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