All galaxies contain hot blue stars...
The smallest galaxy - a dwarf galaxy - will contain stars upwards of 30 billion stars. You are thinking of an open cluster, which as the name suggests, is a cluster of stars, not a galaxy. An open cluster is a group of up to a few thousand stars.
A galaxy!
There are 400 billion stars in our galaxy - we can't name them all.
A galaxy. Ours is the milky way, which is a barrel galaxy. Answer- I think they are actually called star clusters. Galaxies contain much more than just stars. They contain stellar remnants, dust and gas, planets, and many other astronomical features.
A name given to a large group of stars and other bodies in space is a galaxy. Galaxies contain stars, planets, gas, dust, and other celestial objects bound together by gravity. The Milky Way is an example of a galaxy that contains our solar system.
constellation
No galaxy by that name exists.
The collection of stars held together by the force of gravity is called a galaxy. Galaxies can vary in size and shape, and they contain not only stars but also gas, dust, and dark matter. Our own galaxy is known as the Milky Way.
Our Solar System is part of the Milky Way Galaxy
Yes. Amsonia hubrichtii is the scientific name of a blue star. Blue stars are part of the Main Sequence stars.
galaxy
If they form a galaxy, it's called a galaxy of course.