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Tonight

International Observe the Moon Night is tonight
International Observe the Moon Night is October 16, 2021. It's a global event for celebrating the moon. Here's how you can participate online or in person.
Lia De La Cruz
October 16, 2021

Brightest Stars

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Delta Cephei helps measure cosmic distances
September 24, 2021
Gamma Cephei, aka Errai, a future North Star
September 22, 2021
Alpha Cephei, a fast-spinning star
September 14, 2021
Fomalhaut, loneliest star, near Jupiter and Saturn in 2021
September 9, 2021

Favorite Star Patterns

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The Teapot guides you to the galactic center
August 7, 2021
Northern Cross: Backbone of Milky Way
July 18, 2021
Coathanger cluster: Looks like its name
July 17, 2021
The Scorpion’s Crown and its stellar neighborhood
July 9, 2021

Astronomy Essentials

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International Observe the Moon Night is tonight
October 16, 2021
How big are asteroids? See comparative sizes in this video
October 14, 2021
What are star trails, and how can I capture them?
October 13, 2021
Proxima Centauri, closest star to our sun
October 10, 2021

Clusters Nebulae Galaxies

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Wild Duck Cluster, M11, in Scutum
August 26, 2021
Andromeda galaxy: All you need to know
August 24, 2021
Find M4 by the Scorpion’s Heart
August 15, 2021
M5, your new favorite globular star cluster
August 14, 2021

Constellations

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Delphinus the Dolphin resembles its name
October 12, 2021
Lacerta the Lizard, home to a blazar
October 3, 2021
Cassiopeia the Queen ascends in September and October
September 13, 2021
Capricornus? Here’s your constellation
August 18, 2021
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