Monday, February 9, 2026

The half-lit moon hits its third quarter phase as the Orion Nebula shines below the hunter's belt: Feb. 9-15

Plus the moon falls into the claws of a cosmic scorpion with a red supergiant at its heart!
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February 9, 2026
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Night Sky This Week
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What's Up This Week?
 
Hello skywatchers!

The night sky this week is filled with a star-studded line-up of skywatching events, featuring lunar milestones and prime time nebula viewing conditions. Things kick off on Feb. 9 with the half-lit moon reaching its third quarter phase among the stars of the constellation Libra, before falling into the clutches of Scorpius on the following nights as it tracks a path beyond the red star Antares. This week's moonless evening skies present a perfect opportunity to explore the wonders of the Orion Nebula as it glows softly among the multicolored stars of Orion, with Sirius below and the steady light of Jupiter shining to its upper left.

In this issue we'll also include the latest on the aurora forecast and what to look out for during the next major moon phase. We'll also point you towards the latest info on the upcoming annular solar eclipse on Feb. 17, take a deep dive into the constellation Orion and gaze at a stunning portrait of the "Flaming Star Nebula".

Here's what to watch for this week.

Clear skies,

Anthony Wood

Skywatching Writer, Space.com

 
A picture of the half-lit moon against a starry black sky.
(Starry Night/Chris Vaughan)
Monday, Feb. 9 — The third quarter moon

February's moon reaches its third quarter phase on Feb. 9, when the entire left side of its disk will appear lit by direct sunlight, while its right is veiled in impenetrable shadow. It's a perfect opportunity to grab your telescope and examine a string of enormous craters scarring the lunar surface close to the line separating night from day, known as the terminator.

 
A simulation of the night sky for Feb. 10 showing the half-lit moon in the constellation Scorpius
(Starry Night/Chris Vaughan)
Tuesday, Feb. 10 — A crescent moon in the scorpion's claws

Look to the southern sky in the predawn hours of Feb. 10 to see the thick lunar crescent shine close to the stars representing the claws of the giant scorpion depicted in the constellation Scorpius. The red light of the supergiant star Antares will be visible twinkling to the left of the lunar disk, having traveled some 550 light-years to reach your eyes.

 
A picture of the Orion Nebula.
(Starry Night/Chris Vaughan)
Friday, Feb. 13 — The Orion Nebula

Find the bright glow of the Orion Nebula — an enormous star-forming region 1,500 light-years from Earth — shining above the southeastern horizon at sunset in February, below the three stars of the famous Orion's Belt asterism. It's one of the closest large-scale stellar nurseries to the sun, where generations of energetic young stars are born, to later drift throughout the Orion spiral arm of the Milky Way.

 
 
 
 
 
Moon Calendar
 
Space.com
Notable moon phase this week: The third quarter moon

This month's third quarter moon phase will occur at 7:43 a.m. EST (1243 GMT) on Feb. 9, when the moon's left side will appear fully lit by the sun, with its right half hidden in shadow. It's a great time to explore the vast lunar seas of Mare Imbrium (the Sea of Showers), Mare Procellarum (the Ocean of Storms) and others that scar the western region of the lunar disk, which were created when ancient lava flows hardened to repave the moon billions of years ago.

A wealth of impressive craters are also thrown into relief close to the terminator, with their illuminated rims and shadowed basins making for a spectacular sight through a modest backyard telescope.

Want to know more? Then be sure to read our ultimate guide to observing the moon for tips on how to get the most out of each lunar phase.
 
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