Triangulum Galaxy Facts

Triangulum Galaxy Facts
One of the closest galaxies to the Milky Way is the Triangulum Galaxy, and is about 3 million light years away in the constellation Triangulum. The galaxy contains about 40 billion stars and its diameter is approximately 60,000 light years. It is a spiral galaxy which is close to another spiral galaxy, Andromeda, about 2.5 million light-years away. The Triangulum, Milky Way, and Andromeda Galaxies are part of the Local Group of 50 galaxies in the same neighborhood of Earth. The Triangulum is the third largest member of this Local Group. It is one of the most distant objects in space that can be viewed with the naked eye.
Interesting Triangulum Galaxy Facts:
The galaxy is may also be known as Messier 33 and NGC 598, and informally may be called the Pinwheel Galaxy.
It is thought to be a satellite of the Andromeda Galaxy due to their interactions, velocity, and proximity to each other.
The name of the galaxy comes from the constellation Triangulum.
It is a spiral galaxy with a weak or maybe no central bar and has loosely wound arms that emanate from the galactic core.
A nebula is inside the core of the galaxy, a cloud of gas and dust, and is called an HII region, where stars are formed.
Stars are actively produced by the Triangulum Galaxy scattered throughout the spiral arms. The rate of starbirth is several times more than the Andromeda Galaxy.
Triangulum and Andromeda are connected by streams of hydrogen gas and embedded stars. The two galaxies are expected to have interaction in about 2.5 billion years as they did in the past.
The Andromeda and Milky Way may also one interact affecting the Triangulum Galaxy, and it may tear it apart into a larger elliptical galaxy.
Though it can be seen sometimes with the naked eye, it can be better observed using binoculars or a telescope. However, even a small amount of light pollution can affect the observation of the galaxy without the aid of a telescope.
The galaxy was originally discovered by Charles Messier in 1764 as object 33, or M33. It was also catalogued by William Herschel who mostly left out other Messier discoveries.
Compared to the Milky Way with 400 billion stars, and Andromeda with 1 trillion stars, the Triangulum's 40 billion is a small number.
It is considered an isolated galaxy because there are no indications of recent mergers or interactions with other galaxies.

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