The longest total solar eclipse visible from land until 2114 will sweep across Spain and North Africa on August 2, 2027. Here’s how to choose where to watch it.

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Looking for a sky event this week? Check out our full Sky This Week column.  August 1: Open cluster NGC 6709 Mercury reaches its greatest western elongation at 4 A.M. EDT, standing 19° from the Sun. The tiny planet reaches an altitude of almost 5° above the eastern horizon an hour before sunrise, glowing at magnitude 0.2.Continue reading "The Sky Today on Sunday, August 2: Mercury at greatest western elongation"

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Looking for a sky event this week? Check out our full Sky This Week column.  July 31: Mercury brightening With the Moon rising later each night as it wanes, there’s a slightly longer dark window tonight for deep-sky observing. Let’s use it to track down NGC 6709, a lovely open cluster in the constellation Aquila the Eagle. Continue reading "The Sky Today on Saturday, August 1: Open cluster NGC 6709"

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This month we’ve got three big celestial events to cover: eclipses of the Sun and Moon, and especially good prospects for the Perseid meteor shower. Plus we’ll track down a few planets, and gaze at the center of our galaxy. So load up on the bug juice, and come along on this month’s Sky Tour.

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A partial lunar eclipse is visible across the U.S. this month, while a total solar eclipse occurs in Europe. Venus dominates after sunset, reaching 50% illumination. Most planetary activity is after midnight, as Saturn and Neptune rise in Pisces. The predawn hours reveal a fine conjunction between Jupiter and Mercury. And Mars crosses into Gemini,Continue reading "August 2026: What’s in the sky this month? Solar and lunar eclipses, plus the Perseid meteors"

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Although the early evening sky boasts only one naked-eye planet, quality more than makes up for the lack of quantity. Venus attains a splendid peak when it reaches greatest elongation Aug. 15. It then lies 46° east of the Sun and stands 30° high in the west an hour after sundown. The planet shines brilliantlyContinue reading "August 2026: What’s in the Southern Hemisphere sky this month?"

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Once the bright Moon is out of the evening sky by Monday or so, use Altair high in the southeast to find little Delphinus and Sagitta roughly a fist at arm's length from it.

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The only total solar eclipse of the year coincides with the Perseid meteor shower. Here's what you need to know to watch the eclipse.

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Looking for a sky event this week? Check out our full Sky This Week column.  July 24: The Moon passes Antares Rising in the east around 10:30 P.M. local daylight time is the Great Square of Pegasus, made up of four stars: Algenib, Markab, Scheat, and Alpheratz. But of these four, only the first three on theContinue reading "The Sky Today on Saturday, July 25: Great Square rising"

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The waxing gibbous Moon passes Antares. Turn the Summer Triangle into the Summer Diamond. And as you snuggle into bed, would Vega land on your roof if it dropped out of the sky?

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Looking for a sky event this week? Check out our full Sky This Week column.  July 23: Mercury’s retrograde path ends The Moon passes 0.6° south of Antares, the heart of Scorpius the Scorpion, at 6 P.M. EDT. This evening, the two remain nestled close, a lovely sight in the southern sky after sunset.  About 90 minutesContinue reading "The Sky Today on Friday, July 24: The Moon passes Antares"

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Friday, July 24The Moon passes 0.6° south of the bright red star Antares in Scorpius at 6 P.M. EDT. This evening, the two remain nestled close, a lovely sight in the southern sky after sunset. You’ll find the pair in the south early this evening, slowly arcing down toward the west throughout the evening. AtContinue reading "The Sky This Week from July 24 to 31: The Southern Delta Aquariids peak"

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Looking for a sky event this week? Check out our full Sky This Week column.  July 22: Dione passes north of Saturn The planet Mercury is stationary at 1 P.M. EDT. Located in the constellation Gemini, the tiny world is now rising before the Sun, visible for a short time in the east before sunrise. However, it’sContinue reading "The Sky Today on Thursday, July 23: Mercury’s retrograde path ends"

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The crescent Moon visits Venus in twilight. After dark, we're in the peak month for "the Orion of Summer" with its Cat's Eyes. And cold-weather Cassiopeia is already poking up.

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Looking for a sky event this week? Check out our full Sky This Week column.  July 15: The Summer Triangle overhead The nearly three-day-old Moon passes 0.5° south of Regulus, the heart of Leo the Lion, at 9 P.M. EDT. Just after sunset, you’ll be able to spot the delicate crescent Moon in the west, with brightContinue reading "The Sky Today on Thursday, July 16: The Moon passes the Lion’s heart"

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Looking for a sky event this week? Check out our full Sky This Week column.  July 14: Mars sits north of Aldebaran Now that summer is in full swing, let’s check in with the season’s most famous asterism: the Summer Triangle. By late evening, this celestial shape is high in the southeast, bounded by the bright starsContinue reading "The Sky Today on Wednesday, July 15: The Summer Triangle overhead"

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The bright, distinctive pattern of Upper Scorpius is on its best display in the south right after nightfall. Telescopic treasures await. In the west, Regulus now departs from Venus.

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Here's an observing guide to both familiar and lesser-known deep-sky objects that inhabit our galaxy's equatorial zone.

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Meet Cygnus, the Swan, a high-flying constellation that looks like its namesake and has a rich mythological history.

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Regulus creeps up to Venus in twilight this week. Vega and Arcturus balance across the zenith. And this being July, Scorpius decorates the south.

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