The Universe Vocab. 1

Front

Prevailing cosmological model explaining the observable universe's existence and evolution.

Back

Big Bang Theory

Front

A region in space with a gravitational field so intense that nothing can escape.

Back

Black Hole

Front

A galaxy with an elliptical shape and no internal structure or spiral arms.

Back

Elliptical Galaxy

Front

A star system with two stars orbiting a common center of mass.

Back

Binary System

Front

Galaxy without a defined shape.

Back

Irregular Galaxy

Front

Spiral galaxy with a bar-like structure between the core and spiral arms.

Back

Barred Spiral Galaxy

Front

A system of millions or billions of stars, gas, and dust, held by gravity.

Back

Galaxy

Front

Galaxy with stars and gas mainly in spiral arms.

Back

Spiral Galaxy

Front

Structure of hundreds to thousands of galaxies bound by gravity.

Back

Galactic Cluster

Front

An extremely luminous active galactic nucleus.

Back

Quasar