Formation and Evolution of Galaxies main content.

Formation and Evolution of Galaxies

Formation and evolution of the galaxies_HERO AMNH/D. Finnin

Exhibition Text

In the early universe, there were no galaxies. Today, there are many billions. How did they form? Astronomers use the fundamental laws of physics to deduce the basic story of galaxy formation. Galaxies form out of immense clouds of gas that collapse and rotate. As they evolve, stars form within them. Entire galaxies can collide, changing their appearance. Looking deep into space, we see galaxies at earlier stages in their lives, and learn more about their evolution. They are more numerous, display unusual shapes, and have episodes of energetic outbursts. Galaxies can be seen back to more than 10 billion years ago.

For Educators

Topic: Astronomy

Subtopic: Galaxies

Keywords: Astrophysics, Galaxies--Formation, Galaxies--Evolution

Audience: General