Universe

Front

The sun and all of the planets and other bodies that travel around it.

Back

Solar System

Front

A relatively large spherical body that orbits a star.

Back

Planet

Front

A large celestial body that is composed of gas and that emits light.

Back

star

Front

A collection of stars/solar systems, dust, and gas bound together by gravity.

Back

Galaxy

Front

CHALLENGE: A large cloud of gas and dust in interstellar space; a region in Space where stars are born.

Back

Nebula

Front

The distance that light travels in one year; about 9.46 trillion kilometers.

Back

Light Year

Front

CHALLENGE: The actual brightness of an object such as a star

Back

Luminosity

Front

CHALLENGE: A gigantic explosion in which a massive star collapses and throws its outer layers into space.

Back

Supernova

Front

CHALLENGE: The most commonly accepted theory (& show!) that explains the beginning of our known universe is the -

Back

Big Bang Theory

Front

Which of the following is the largest? star, universe, cluster, galaxy

Back

universe