Which is the Largest and Biggest Galaxy?

There is no definitive answer to the question: Which is the largest and biggest galaxy? Ultimately, it depends on how big you consider a galaxy to be. The largest galaxy, IC 1101, measures more than 2 million light-years across. In other words, if you were to stand at one end of it, you'd be two-thirds the distance from the center of our galaxy to the center of Andromeda.

The smallest known galaxy is the Comet Galaxy. It is about 600,000 light-years across and one of the largest spiral galaxies in the universe. Despite its size, it's also one of the fastest-moving galaxies. It moves at an astonishing rate, over two million miles (3.2 million kilometers) per second. This is because it is being ripped apart by other galaxies nearby. The galaxy, located three billion light-years away, is just as large as the Earth!

Despite its size, the biggest known galaxy is IC 1101, a supergiant elliptical galaxy about 1.04 billion light-years away. However, there are no reliable measurements of its distance from the Earth. Scientists are still working on the exact answer, but it's possible to estimate a galaxy's mass by comparing it to the diameter of our own Milky Way. Its mass is about a billion times greater than the Milky Way.

The largest galaxy known to mankind is IC 1101. It is approximately six million light-years across and lies in the Abell 2029 galaxy cluster. The Milky Way is just a tenth of that distance. However, IC 1101 contains over a hundred trillion stars, making it the largest galaxy ever discovered in the universe. It would dwarf our own galaxy by at least three hundred trillion, and would not be visible from Earth.

The Andromeda galaxy, in addition to being the largest and the most massive galaxy, is another giant that has the largest mass in the universe. It is about 240 billion times the mass of the sun, with a supermassive black hole at its center. The black hole is so massive that it sucks up a lot of matter, and the surrounding gas and dark matter causes the plasma jets to expand. In addition to its enormous size, Alcyoneus' mass is also oddly low, which makes it an average radio galaxy.

One of the biggest galaxy discoveries recently made in the universe is the Tadpole galaxy, a spiral galaxy with a tadpole-like tail that extends for thousands of light-years. Its unusual shape may have resulted from a collision with another galaxy cluster. This merger resulted in the galaxy's tail absorbing material from the smaller galaxy. It is expected to lose its tail in time.