Intracluster medium
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In astronomy, the intracluster medium is the superheated plasma that permeates a galaxy cluster. The gas consists mainly of ionized hydrogen and helium and accounts for most of the baryonic material i
The overlaid blue cloud illustrates the intracluster medium around the Spiderweb Galaxy, as seen when the universe was 3 billion years old.
Chandra image of the Perseus Cluster's radio lobes. These relativistic jets of plasma emit radio waves, are X-ray "cold", and appear as dark patches in stark contrast to the rest of the ICM.
Quenching (astronomy)
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In astronomy, quenching refers to the shutting-down of star formation within a galaxy. A galaxy where star formation has quenched is known as a quenched or quiescent galaxy. Quenching is an important
NGC 4150, a quiescent elliptical galaxy in the Coma Berenices constellation
The Cosmic Cliffs, an active star-forming region in NGC 3324. Across cosmic time, star formation rates in our modern Universe are actually much lower than previous epochs.
Eridanus II, a dwarf galaxy quenched solely by supernova feedback
The astrophysical jet of M87. Astrophysical jets are a type of active galactic nucleus (AGN) feedback that can heat up previously cold gas and prevent quenching.