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Tonight

The Harvest Moon is coming. Video and more here
In 2023, the Northern Hemisphere's Harvest Moon falls overnight September 28-29, or almost six days after the September equinox. It's also a supermoon.
Deborah Byrd
September 26, 2023

Astronomy Essentials

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The Harvest Moon is coming. Video and more here
September 26, 2023
Visible planets and night sky for September and October
September 26, 2023
2023 September equinox: All you need to know
September 22, 2023
On the equinox, are day and night equal?
September 21, 2023

Brightest Stars

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Fomalhaut is the loneliest star in the southern sky
September 24, 2023
Delta Cephei helps measure cosmic distances
September 10, 2023
Alderamin, or Alpha Cephei, is a fast-spinning star
September 10, 2023
61 Cygni – a double star – is nicknamed Flying Star
August 11, 2023

Constellations

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Cassiopeia ascends in September and October
September 13, 2023
Cepheus the King: The constellation that looks like a house
September 6, 2023
Is Ophiuchus the 13th constellation of the zodiac?
August 30, 2023
Capricornus the Sea-goat has an arrowhead shape
August 27, 2023

Clusters Nebulae Galaxies

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Andromeda galaxy: All you need to know
September 12, 2023
The Great Rift is a dark swath in the Milky Way
August 15, 2023
Explore the Lagoon Nebula, M8, in Sagittarius
August 10, 2023
The Wild Duck Cluster, M11, a lovely open cluster in Scutum
August 6, 2023

Favorite Star Patterns

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Teapot of Sagittarius points to Milky Way center
August 11, 2023
The Scorpion’s Crown and its stellar neighborhood
July 27, 2023
The Northern Cross: Find the backbone of the Milky Way
July 18, 2023
Coathanger cluster: It does look like its name
July 9, 2023
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