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Perseus Cluster
Details
The Perseus Cluster is one of the most massive known galaxy clusters in the nearby universe. It contains thousands of galaxies embedded in a vast cloud of superheated gas, and its violent core has become one of astronomy’s most important laboratories for studying dark matter, hot intracluster plasma, and the effects of a supermassive black hole on its surroundings.
The Perseus Cluster is not just a large gathering of galaxies. It is a vast environment filled with thousands of galaxies and a huge reservoir of multimillion-degree gas, and its center is anything but quiet. Near the core, the central galaxy NGC 1275 hosts an active nucleus whose influence can be seen in the surrounding hot plasma.
That influence is what makes Perseus so famous. The central activity blows bubbles of relativistic plasma into the intracluster gas, carving visible cavities in X-ray images and turning the cluster into one of astronomy's clearest laboratories for feedback between black holes and cluster gas. In Perseus, a supermassive black hole does not just shape its host galaxy. It helps stir an entire cluster environment.
That is why the Perseus Cluster matters. It shows that the biggest cosmic structures are not passive containers for galaxies. They are dynamic ecosystems in which hot gas, gravity, and black-hole activity remain locked together over enormous distances and timescales.
4.31million ly
Key facts
- Category
- Galaxy clusters
- Object class
- Galaxy cluster
- Host
- Pisces–Perseus Supercluster
- Scale fact
- 11.6 million lydiameter
- Composition
- ~1,000 galaxies, hot intracluster gas, dark matter
Scale context
Where Perseus Cluster sits on the full axis
By size on the journey, Perseus Cluster sits between Bullet Cluster and Virgo Cluster. The band below compares Perseus Cluster with nearby Galaxy cluster objects so the size jump stays easy to read.
Shared physical scale
13.0million ly
Together, these objects make the size change around Perseus Cluster 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.