Interacting Galaxies main content.

Interacting Galaxies

Part of Hall of the Universe.

Interacting galaxies_HERO AMNH/D. Finnin

Exhibition Text

Galaxies are grand yet fragile structures. When they pass close to each other or collide, their mutual gravity pulls them apart, twisting and distorting their shapes. Usually, two galaxies that collide will eventually merge to become one. Such mergers appear to be a standard feature in galaxy formation. During galaxy encounters, it is not the stars within the galaxies, but rather their gas clouds that collide.

For Educators

Topic: Astronomy

Subtopic: Galaxies

Keywords: Astrophysics, Gravitation, Galaxies--Evolution, Gases

Audience: General