What is the defining feature of galaxies known as 'super-spirals'?

Answer

They exhibit rotation that is unexpectedly rapid, challenging visible mass models

Super-spirals are characterized by having velocities so rapid that they cannot be accounted for solely by the gravity of their visible mass.

What is the defining feature of galaxies known as 'super-spirals'?

#Videos

The Fastest Spinning Galaxy | Space is Weird - YouTube

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