Return to Scale View
About News Create With Us
Return to Scale View

How big is the Triangulum Galaxy?

The Triangulum Galaxy is 570 exameter

The Triangulum Galaxy: A Spectacular Spiral in Space

Did you know that there’s a galaxy named after a triangle? It’s called the Triangulum Galaxy, and it’s an incredible spectacle in our universe. But how big is the Triangulum Galaxy? Let’s embark on a journey through the cosmos to discover more about this fascinating celestial body.

Size of the Triangulum Galaxy

The Triangulum Galaxy, also known as Messier 33 or NGC 598, is approximately 2.73 million light-years away from Earth. In terms of its size, it has a diameter of around 61,100 light-years. To understand this better, let’s compare it with our own galaxy, the Milky Way.

  • The Milky Way is estimated to be about 100,000 light-years in diameter. - In comparison, the Triangulum Galaxy, with its 61,100 light-year diameter, is a little more than half the size of the Milky Way. So, while the Triangulum Galaxy may be smaller than our own galaxy, it’s still incredibly vast. To put it into perspective, one light-year is about 5.88 trillion miles. So, the Triangulum Galaxy’s diameter of 61,100 light-years is approximately 359 trillion miles across!

Size in the Local Group

The Triangulum Galaxy is part of a group of more than 50 galaxies known as the Local Group. Within this group, the Triangulum is the third-largest galaxy, with only the Andromeda Galaxy and the Milky Way being larger.

  • The Andromeda Galaxy, the most massive galaxy in the Local Group, has a diameter of about 220,000 light-years, making it almost four times larger than the Triangulum Galaxy. - The Milky Way, our home galaxy, is the second-largest in the Local Group, and as we’ve already mentioned, it’s nearly twice the size of the Triangulum Galaxy. Despite its smaller size, the Triangulum Galaxy holds its own within the Local Group, boasting a beautiful spiral structure and a rich history of interactions with the Andromeda Galaxy.

A Miniature Spiral Galaxy

Although the Triangulum Galaxy is smaller than the Milky Way and Andromeda, it is the smallest spiral galaxy in the Local Group. This makes it unique, as spiral galaxies are usually larger. This also indicates that the Triangulum Galaxy might have been even larger in the past before its encounters with the Andromeda Galaxy. In conclusion, while the Triangulum Galaxy may be smaller in comparison to its cosmic neighbors, it’s still an enormous and fascinating part of our universe. Its unique structure and position within the Local Group make it a compelling subject of study for astronomers worldwide. The next time you look up at the night sky, consider the vastness of the Triangulum Galaxy, a celestial spectacle millions of light-years away.

Smaller By Category
Sombrero Galaxy
Do you think the Sombrero Galaxy looks like a sombrero? I'm not sure. Oh! Did you know that there is a supermassive black hole in the center of this galaxy? Most large galaxies have supermassive black holes, even our Milky Way!
NGC 3310
NGC 3310 is another one of those galaxies that have collided with other galaxies, altering their shape. It is a spiral galaxy that has very beautiful arms and is around 35 million light-years away.
Large Magellanic Cloud
The Large Magellanic Cloud is only called large because it is larger than the galaxy nearest to it, the Small Magellanic Cloud. If the Small Magellanic Cloud were larger, the Large Magellanic Cloud would be called the Smaller Magellanic Cloud! We think the two galaxies used to be one, and were split apart by the Milky Way.
Larger By Category
Whirlpool Galaxy
The spiral arms in the Whirlpool Galaxy were believed to have been formed from a collision of a nearby galaxy. Wouldn't it be odd if you grew new arms whenever you collided into something?
Canis Major Dwarf Galaxy
The Canis Major Dwarf Galaxy is the nearest galaxy, if you don't count the Milky Way itself. It lies between the arms of the Milky Way and is being pulled apart by the gravity of the Milky Way.
Cartwheel Galaxy
Astronomers think the Cartwheel Galaxy had a collision with two nearby galaxies 200 million years ago. Actually, 600 million years ago, because the Cartwheel Galaxy is 400 million light-years away, so what we see of it is already 400 million years old.