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This Week's Sky at a Glance logo

This Week's Sky At a Glance

This Week's Sky at a Glance, September 9 – 17

First-quarter Moon shines over Mars Friday evening. The triangle of Mars, Saturn, and Antares, continues to lengthen as summer nears its end.

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This Week's Sky At a Glance

This Week's Sky at a Glance, September 2 – 10

A Friday twilight challenge: Shortly after sunset, use binoculars to look for the super-thin crescent Moon near Jupiter and Venus just above the horizon.

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This Week's Sky At a Glance

This Week's Sky at a Glance, August 26 – September 3

Venus-Jupiter conjunction on Saturday: about 20 minutes after sunset, look above the western horizon, left of where the Sun went down. Bring binoculars.

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This Week's Sky At a Glance

This Week's Sky at a Glance, August 19 – 27

Summer is on the decline, temperatures notwithstanding: when darkness falls, Cassiopeia has now risen as high in the northeast as the Big Dipper has sunk in the northwest.

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This Week's Sky At a Glance

This Week's Sky at a Glance, August 12 – 20

This Friday, look lower right of the waxing gibbous Moon for the ever-changing Saturn-Mars-Antares triangle. Full Moon on Wednesday night.

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This Week's Sky At a Glance

This Week's Sky at a Glance, August 5 – 13

The crescent Moon poses with Jupiter low in the west in twilight Friday. Early next week, Mars passes 0.9° beneath Delta Scorpii, the brightest star in the head of Scorpius.

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This Week's Sky At a Glance

This Week's Sky at a Glance, July 29 – August 6

As summer goes on, Scorpius shifts westward from its high southern stance just after dark; Sagittarius moves in from the east. Prime time for Messier objects!

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This Week's Sky At a Glance

This Week's Sky at a Glance, July 22 – 30

Starry Scorpius is sometimes called "the Orion of Summer" for its brightness, its blue-giant stars, and its 1st-magnitude red supergiant (Antares).

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This Week's Sky At a Glance

This Week's Sky at a Glance, July 15 – 23

The Moon shines over Mars, Saturn, and Antares at dusk. And after Saturday's sunset, use binoculars to look for Venus — with fainter Mercury a bit above.

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This Week's Sky At a Glance

This Week's Sky at a Glance, July 8 – 16

The waxing crescent Moon shines in the west at dusk on Friday. Jupiter is the bright "star" at its upper left (for North America).

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This Week's Sky At a Glance

This Week's Sky at a Glance, July 1 – 9

Is your sky dark enough to see the Coma Berenices star cluster naked-eye? Spot Jupiter in the west after twilight this week and the cluster just above.

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This Week's Sky At a Glance

This Week's Sky at a Glance, June 24 – July 2

This is the time of year when the two brightest stars of summer, Arcturus and Vega, hang about equally high overhead shortly after dark: Arcturus in the southwest, Vega in the east.

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This Week's Sky At a Glance

This Week's Sky at a Glance, June 17 – 25

The Moon, Mars, and Saturn make a wide, flattish triangle Friday night. At nightfall, look for the Big Dipper hanging straight down in the northwest.

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This Week's Sky At a Glance

This Week's Sky at a Glance, June 10 – 18

Friday evening the Moon poses between Jupiter and Regulus. Turn binoculars on Jupiter, and you'll find the star Chi Leonis among the Galilean satellites.

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This Week's Sky At a Glance

This Week's Sky at a Glance, June 3 – 11

The Mars-Antares-Saturn triangle rises higher at dusk every night, and halfway between Mars and Jupiter stands Spica. Cassiopeia lurks low in the north.

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This Week's Sky At a Glance

This Week's Sky at a Glance, May 27 – June 4

The last-quarter Moon doesn't rise until around 2 a.m. It'll be between the Aquarius's dim spilling bucket and the dim Circlet of Pisces.

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This Week's Sky At a Glance

This Week's Sky at a Glance, May 20 – 28

The nearly full Moon looms low in the east-southeast at sunset and shines above Mars as twilight fades. How soon can you pick out Mars?

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This Week's Sky At a Glance

This Week's Sky at a Glance, May 13 – 21

As twilight fades, look upper left of the first-quarter Moon for Regulus. Brighter Jupiter shines much farther to the Moon's left (for North America).

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This Week's Sky At a Glance

This Week's Sky at a Glance, May 6 – 14

After sunset Saturday, catch the hairline crescent Moon just above the horizon. Bring out your scope to see a double-shadow transit on Jupiter Friday night.

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This Week's Sky At a Glance

This Week's Sky at a Glance, April 29 – May 7

The last-quarter Moon shines above Capricornus before dawn's first light. These evenings, the long, dim sea serpent Hydra snakes across the southern sky.

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