Celestial hemisphere:  Northern  ·  Constellation: Triangulum (Tri)  ·  Contains:  HD9269  ·  HD9483  ·  IC 131  ·  IC 132  ·  IC 133  ·  IC 135  ·  IC 136  ·  IC 137  ·  IC 142  ·  IC 143  ·  M 33  ·  NGC 588  ·  NGC 592  ·  NGC 595  ·  NGC 598  ·  NGC 604  ·  Triangulum Galaxy  ·  Triangulum Pinwheel
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M33 Unveiled: A Spiral Galaxy Like No Other, Jedadiah Ashford
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M33 Unveiled: A Spiral Galaxy Like No Other

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M33 Unveiled: A Spiral Galaxy Like No Other, Jedadiah Ashford
Powered byPixInsight

M33 Unveiled: A Spiral Galaxy Like No Other

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Description

M33, the Triangulum Galaxy, is located in the diminutive constellation of Triangulum and is one of the most distant permanent objects that can be viewed with the naked eye, assuming you've got stellar seeing conditions. Officially cataloged as Messier 33 and NGC 598, it's our cosmic neighbor, a mere 3 million light-years away. Andromeda Galaxy is 2.4M light years away.

The Triangulum Galaxy is part of our Local Group of galaxies, which means it's in good company, alongside the Milky Way and Andromeda. Despite being the third-largest galaxy in the Local Group, M33 is something special because it lacks the bright, bulging core you'd expect. Its center is relatively subdued, leading to an ethereal appearance that can make it a challenge to observe but a delight when you do. With the Andromeda Galaxy being the largest in our local group at 200,000 light years across, and our Milky Way galaxy at 100,000 light years across, the Triangulum Galaxy is still a respectable 60,000 light years in length!

One of the most remarkable aspects of the Triangulum Galaxy is its abundance of star-forming regions. These nebulous areas are clearly seen as bright red clouds where massive stars are born out of compressing gas. It's a cosmic maternity ward about 60,000 light-years in diameter, a bustling area of new star formation. 

The Triangulum Galaxy is gradually being pulled into the orbit of the Andromeda Galaxy. But fear not—the actual collision isn't expected to occur for another 2.5 to 4 billion years, so there's still time to grab some popcorn.

All told, the Triangulum Galaxy has been one of my favorite galaxies to capture.

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M33 Unveiled: A Spiral Galaxy Like No Other, Jedadiah Ashford