What is the most massive known galaxy in the universe?

The most massive known galaxy in the universe is currently thought to be the central galaxy in the Abell 85 cluster, located about 740 million light-years from Earth. This galaxy, which has been named Abell 85 BCG (Brightest Cluster Galaxy), is estimated to have a mass of around 40 trillion times that of the Sun.

Abell 85 BCG is a type of galaxy known as a cD (for central dominant) galaxy, which are typically found at the centers of massive galaxy clusters. These galaxies are thought to form through a process known as cannibalism, in which they consume smaller galaxies that have strayed too close.

While Abell 85 BCG is currently the most massive known galaxy, it is possible that even more massive galaxies exist in the universe that have yet to be discovered. With new telescopes and observational techniques being developed all the time, astronomers may soon discover even larger and more mysterious objects in the cosmos.

The most massive known galaxy in the universe is Alcyoneus, a giant radio galaxy located 3 billion light-years away from Earth. Alcyoneus is so large that it would take 16 million years to travel from one end to the other at the speed of light. It has a mass of about 100 trillion suns, making it more than 10 times more massive than the Milky Way.

Alcyoneus is a member of a galaxy cluster called Abell 2029, which is one of the largest and most massive galaxy clusters known. The cluster is so dense that it is difficult to see individual galaxies within it. Instead, astronomers see a large, diffuse cloud of light. This cloud is made up of the combined light from millions of galaxies, including Alcyoneus.

Alcyoneus is a very active galaxy, and it is thought to be powered by a supermassive black hole at its center. The black hole is estimated to have a mass of about 10 billion suns. It is one of the largest black holes known, and it is thought to be responsible for the galaxy's immense size and activity.

Alcyoneus is a very interesting and important galaxy. It is one of the largest and most massive galaxies known, and it is also one of the most active. It is thought to be a good example of how galaxies evolve and grow over time.