Links
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- IC 1101 on Wikipedia
IC 1101
Details
IC 1101 is an enormous cluster-central galaxy embedded in Abell 2029. Systems like this grow huge diffuse halos by cannibalizing neighboring galaxies over billions of years, which is why IC 1101 has long been treated as one of the most extreme single galaxies known.
IC 1101 is not memorable because of a dramatic spiral pattern or a famous dust lane. It stands out because it is a giant cluster-central galaxy, the kind of object that grows for billions of years in the crowded center of a galaxy cluster by absorbing smaller systems and building an enormous diffuse halo. It is less a neat standalone galaxy than the dominant product of a long history of accumulation.
That growth history is the key to its character. Sitting in Abell 2029, IC 1101 belongs to an environment where gravity keeps delivering galaxies, stars, and hot gas toward the center. The result is a huge elliptical system with an extended envelope and one of the most extreme reputations of any single galaxy. It represents what happens when a galaxy spends cosmic time at the gravitational center of a rich cluster.
That is why IC 1101 matters. It is a reminder that some galaxies become extraordinary not through a single violent event, but through relentless, repeated mergers over immense spans of time. IC 1101 makes galaxy growth feel cumulative: a record of repeated cluster-scale accretion written into one enormous central body.
185,714ly
Key facts
- Category
- Galaxies
- Object class
- Giant elliptical galaxy
- Host
- Abell 2029
- Scale fact
- ~500,000 lydiameter
- Composition
- Stars, hot gas, dark matter
Scale context
Where IC 1101 sits on the full axis
By size on the journey, IC 1101 sits between Andromeda Galaxy and NGC 6872. The band below uses nearby Galaxies objects for context.
Shared physical scale
465,400ly
Together, these objects make the size change around IC 1101 easy to compare at a glance.
Between the smallest and the largest, perspective is everything.
About
Scale of Space is a scroll-based journey through the universe, placing objects on a single logarithmic scale so you can compare size across an unbroken range.
Guides turn parts of that scale into curated essays, while focused views let you explore the same range through specific groups of objects.