These rare galaxies aren't forming stars like they should, and scientists don't know why

There is something weird going on in the universe.

Scientists have believed that post-starburst galaxies, or galaxies born from violent galactic collisions that are no longer forming stars, expel gas and dust and are unable to produce new stars, are a myth. New observations by the ALMA show that PSBs retain a lot of their gas after the merger, which would fuel star formation.

PSBs don't form stars even when they keep their gas.

The black hole in the dwarf galaxy causes star formation.

There is usually a burst of star formation when two galaxies collide. There is little to no star formation in a PSB when there is a galactic merger. The gas and dust that is required to birth stars is expelled from PSBs. According to the ALMA data, while PSBs compress their gas, which should be sufficient fuel to boost star formation, they still remain inactive.

While this gas should be forming stars efficiently, it isn't. astronomer Adam Smercina of the University of Washington said in a statement that it is less efficient than similarly compact gas.

The researchers have a theory to explain it.

Star formation may be suppressed due to turbulence in the gas, like a strong wind can suppress a fire.

The study was published in a journal.

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