What evolutionary pathway can lead to a large, featureless elliptical galaxy from interacting spirals?

Answer

A merger following a close encounter between two spiral galaxies

Interactions between galaxies are a fundamental driver of evolution. A close encounter between two spirals can eventually lead to a merger, resulting in a settled, often featureless, elliptical galaxy devoid of ongoing spiral activity.

What evolutionary pathway can lead to a large, featureless elliptical galaxy from interacting spirals?

#Videos

We Can't Explain Spiral Galaxies - The Winding Problem - YouTube

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