Skywatch Line Archive

Skywatch Line for Wednesday October 28th and Thursday October 29th, 2020

This is the Dudley Observatory Skywatch Line for Wednesday, October 28th, and Thursday, October 29th, written by Louis Suarato. The 93% illuminated, waxing gibbous Moon rises at 5:05 p.m. Wednesday. Mars rises 4 minutes later and will trail the Moon by about 10 degrees throughout the night. Thursday night, Mars will lead the Moon across the sky. The Moon and red planet will be separated by about 5 degrees. Jupiter and Saturn emerge over the southern horizon 6 degrees apart during twilight. The two gas giants will set at 10:28 p.m., and 10:55 p.m., respectively. Venus rises at 4:22 a.m.,… Continue reading

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Skywatch Line for Monday October 26th and Tuesday October 27th, 2020

This is the Dudley Observatory Skywatch Line for Monday and Tuesday, October 26th, and 27th, written by Joe Slomka. The Sun sets at 5:55 PM; night falls at 7:30. Dawn begins at 5:49 AM and ends with the Sun rising at 7:24. The constellation Aquarius hosts the Moon on both nights. Monday’s 13-day-old Moon rises at 4:18 PM, 30 arc-minutes in size and appears 82% illuminated; it sets at 3:15 AM. Tuesday’s Moon is slightly smaller, but 88% lit, rises at 4:42 PM and sets at 4:16 AM, Wednesday. Jupiter, Pluto and Saturn continue to occupy Sagittarius and illuminates the… Continue reading

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Skywatch Line for Friday October 23 through Sunday October 25, 2020

This is Dudley Observatory’s Skywatch Line for Friday, October 23, through Sunday, October 25, written by Sam Salem. On Friday, Sun rises at 7:19am and sets at 6:00pm; Moon rises at 2:43pm. Moon completes the first quarter of its orbit around Earth at 9:23am on Friday. The evenings surrounding first quarter are the best ones to see the lunar terrain when it is dramatically lit by low-angled sunlight. For a few hours near its first quarter phase, a feature on the Moon called the Lunar X becomes visible in strong binoculars and backyard telescopes. When the rims of the craters… Continue reading

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Skywatch Line for Wednesday October 21st and Thursday October 22nd, 2020

This is the Dudley Observatory Skywatch Line for Wednesday, October 21st, and Thursday, October 22nd, written by Louis Suarato. Look over the south-southwestern horizon after sunset on Wednesday for the 33% illuminated, waxing crescent Moon. To the Moon’s upper left are Jupiter and Saturn. Thursday night, the nearly First Quarter Moon moves below the 2 gas giants to form a triangle. Saturn and Jupiter are 6 degrees apart. In the east, Mars shines at magnitude -2.45 after rising at 5:43 p.m., Wednesday. Thursday night, all four Galileo moons will be visible to the sides of the Jupiter until Io begins… Continue reading

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Skywatch Line for Monday October 19th and Tuesday October 20th, 2020

This is the Dudley Observatory Skywatch Line for Monday and Tuesday, October 19th, and 20th, written by Joe Slomka. The Sun sets at 6:06 PM; night falls at 7:40. Dawn begins at 5:40 AM and ends with the Sun rising at 7:15. The Moon resides in the constellation Ophiuchus each night. Monday’s Moon rose in daylight and sets at 8:16 PM. The planet Mercury is tonight’s challenge object, because it is close to the Moon and sets at 6:47 PM. Observers are advised to avoid looking at the Sun. Monday’s Moon also shines above Antares, the main star in Scorpius.… Continue reading

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Skywatch Line for Friday, October 16 through Sunday, October 18, 2020

This is Dudley Observatory’s Skywatch Line for Friday, October 16, through Sunday, October 18, written by Sam Salem. On Friday, Sun rises at 7:10am and sets at 6:10pm; Moon rises at 6:40am and sets at 6:30pm. New Moon occurs on Friday at 3:31pm. New Moon travels between Earth and the Sun. New Moons travel across the sky with the Sun all day, lost in the sun’s glare. This new Moon occurs only 4.5 hours after perigee, the Moon’s closest approach to Earth, triggering large tides. On Saturday, you might be able to spot the young Moon at day’s end. The… Continue reading

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Skywatch Line for Monday October 12 and Tuesday October 13, 2020

This is the Dudley Observatory Skywatch Line for Monday and Tuesday, October 12th and 13, written by Joe Slomka. The Sun sets at 6:17 PM, night falls at 7:51. Dawn begins at 5:33 AM and ends with the Sun rising at 7:07. The Moon resides in Leo on both nights. Monday’s Moon sets at 4:30 PM. Tuesday, the 25-day-old Moon rises at 2:47 AM, 17% illuminated, 32 arc-minutes in diameter and sets at 5:03 PM. Tuesday’s Moon appears besides Leo’s brightest star, Regulus, and 4° above Venus. Wednesday’s slimmer Moon rises at 4:03 AM and sets in the afternoon. Sagittarius… Continue reading

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Skywatch Line for Friday October 9 through Sunday October 11, 2020

This is Dudley Observatory’s Skywatch Line for Friday, October 9, through Sunday, October 11, written by Sam Salem. On Friday, Sun rises at 7:02am and sets at 6:22pm; Moon sets at 2:20pm and rises at 11:22pm. The Moon reaches its last quarter phase at 8:40pm on Friday. At last quarter, the Moon is illuminated on its western side, towards the pre-dawn Sun. On Saturday and Sunday before dawn, let the waning Moon guide you to the zodiacal constellations Gemini and Cancer. The Moon will be shining in front of the constellation Gemini the Twins. Get up before dawn to view… Continue reading

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Skywatch Line for Wednesday October 7th and Thursday October 8th, 2020

This is the Dudley Observatory Skywatch Line for Wednesday, October 7th, and Thursday, October 8th, written by Louis Suarato. The 68% illuminated, waning gibbous Moon rises at 9:44 p.m. Wednesday in the constellation Taurus. This may be one of your last opportunities to see Mercury about 30 minutes after sunset. Look low over the west-southwest horizon. Binocular will help, but be careful of the bright glow of the sunset. At that time, Saturn and Jupiter will emerge about 25 degrees above the southern horizon. Jupiter will be to the right, and is the brighter of the two planets. The gas… Continue reading

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Skywatch Line for Monday October 5th and Tuesday October 6th, 2020

This is the Dudley Observatory Skywatch Line for Monday and Tuesday, October 5th, and 6th written by Joe Slomka. The Sun sets at 6:29 PM; night falls at 8:02. Dawn begins at 5:25 AM and ends with the Sun rising at 6:59. The Moon rises in Taurus on both nights. Monday’s 18-day-old Moon rises at 8:32 PM, 86% illuminated and sets at 11:26 AM, Tuesday. Tuesday’s Moon rises at 9:04 PM, 78% lit and sets at 12:26 PM, Wednesday. Sagittarius continues to house Jupiter, Pluto and Saturn. Jupiter rises first, at 2:45 PM, glows with minus 2nd magnitude, 40 arc-seconds… Continue reading

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