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Last updateFri, 16 Sep 2016 12pm

Astronomy

30 May 2017
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Mid-June finds bright Jupiter high in the south-southwest at dusk, and Saturn low in the southeast, some 70 degrees apart. At dawn, Venus gleams in the east, while Saturn is low in the southwest. The moon forms attractive pairings with various planets and stars here and there throughout the month. In our June evening twilight sky, bright Jupiter stands high in the south to southwest at dusk, with Spica nearby, to its lower left. As Jupiter ends retrograde motion against background stars in early June, it reaches a maximum distance of just more than 11 degrees west-northwest of Spica. Keep watch this summer, until Jupiter passes just 3 degrees north of Spica on Sept. 11. By then, they’ll be low in the west-southwest at dusk. After that, the next time Jupiter passes Spica will be during their triple conjunction in 2028-2029. Also in June, we find Saturn rising in the…
28 Apr 2017
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Jupiter is now the most prominent “star” in the evening sky, and Venus, even brighter and near peak brilliance, rules predawn. By May’s end, Saturn rises at a convenient evening hour, allowing both giant planets to be viewed well in the early evening. The moon always appears as a crescent in its monthly encounters with Venus, but is full whenever it appears near Jupiter or Saturn in the eastern evening sky opposite the sun. The young crescent moon at dusk on May 26 marks the beginning of Ramadan, and appears to the lower left of faint, departing Mars. May evenings: A huge conclave of seven stars of first magnitude or brighter in the western sky begins its annual departure in early May. The collection consists of the six stars of the Winter Hexagon, with Betelgeuse inside. The entire Hex is still visible at the start of May, but sky watchers…
30 Mar 2017
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In April 2017, bright and steady Jupiter is likely the first “star” to be spotted after sunset, south of east. Twinkling, blue-white Sirius, in the southwest quadrant, is next. Jupiter is at opposition to the sun, and above the horizon all night, on April 7-8; you can estimate the hour by noting the planet’s location—low in the eastern sky at dusk, high in the south in the middle of night, and low in the western sky at dawn. As morning twilight brightens, we find an even more spectacular planet, Venus, rising in the east, as Jupiter slinks off toward the western horizon. Before dawn brightens too much, locate Saturn in the south. Our evening sky chart plots daily positions of the brightest objects in the current month’s sky at mid-twilight. As April begins, the most-prominent objects, in order of brightness, are steady yellow-white Jupiter, climbing in the east to southeast…

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