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Last updateFri, 16 Sep 2016 12pm

Astronomy

30 Jun 2017
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July finds bright Jupiter in the south-southwestern sky at dusk, and Saturn in the southeast, closing to 65 degrees apart by month’s end. Before dawn, Venus gleams in the east, against the attractive background of Taurus the Bull, with its two prominent star clusters and bright reddish star. On some dates, the moon forms attractive pairings with four of the five naked-eye planets, and four of the five bright zodiacal stars. In July’s evening twilight, bright Jupiter attracts attention in the southwest, with bluish Spica nearby to its left, and golden Arcturus high above them. Yellowish Saturn glows steadily in the southeast to south-southeast, in contrast to the vigorously twinkling reddish star Antares, heart of the Scorpion, to its right. The star reaches south in mid-twilight near month’s end. The Summer Triangle, topped by its brightest star, blue-white Vega, ascends in the eastern sky. The Triangle’s other members are Altair,…
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…

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