Everyone knows that galaxies are not isolated objects. They contain a huge number of stars in their composition. The sheer amount is simply an underestimated estimate of how many stars there really are in the galaxy.
Let's say the smallest galaxy can contain about 10 million stars. A dwarf galaxy, due to its size, cannot form spiral arms, such as our Milky Way Galaxy or the Andromeda Galaxy have. Small galaxies are often swallowed up by larger formations in space.
Andromeda.
The Milky Way Galaxy is a spiral galaxy. It is also not very large, but it still contains over 200 billion stars. The Andromeda Galaxy is located not far from our Galaxy and has a more solid size, its composition is estimated at about 1 trillion stars!
The largest galaxies in the universe are elliptical galaxies
Elliptical galaxies are very huge and do not have such spiral arms as the Andromeda galaxy and the Milky Way. Elliptical galaxies are located at the very center of the core of giant galaxy clusters.
Cluster of galaxies.
Promotional video:
Today we know about one such galaxy located in the Abell 2009 cluster. So, how many stars in it are simply difficult to imagine, according to the most rough estimates, it turns out that it can contain more than 100 trillion stars.
How many stars in the Universe are generally difficult to say, and, probably, it will never be possible to count. According to a rough estimate, the Universe contains more than 100 billion galaxies of various sizes. That is, if you make a rough calculation, you will get about 1 followed by 24 zeros, the figure is quite impressive.
But taking it as the final amount is not worth it, since it is believed that the universe is infinite and may contain even more galaxies than we can imagine. In many galaxies, active star formation is still underway; in older galaxies, some stars pass into the final stage of their existence, after which they can become another black hole.