Universe Vocab

Front

Collection of all things in space

Back

universe

Front

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

Back

galaxy

Front

Electromagnetic radiation from the early universe (Big Bang)

Back

Cosmic Background radiation

Front

A giant cloud of dust and gas in space

Back

nebula

Front

A fixed luminous point in the night sky, a large, remote incandescent body.

Back

star

Front

A galaxy without a distinct shape

Back

Irregular galaxy

Front

A large, compact spherical star cluster of old stars in a galaxy's outer regions.

Back

Globular cluster

Front

Loose grouping of stars in a galaxy.

Back

open cluster

Front

Massive, remote celestial object emitting large energy.

Back

quasar

Front

A star that suddenly brightens due to a catastrophic explosion ejecting most of its mass.

Back

supernova