Models of the Universe & Solar System

Front

Astronomer

Back

A scientist who studies objects in space, such as black holes, galaxies, moons, planets, stars, etc.

Front

Astronomy

Back

The study of celestial objects, space, and the universe as a whole.

Front

Big Bang Theory

Back

A theory that says the universe began as a small point that expanded rapidly about 13.7 billion years ago.

Front

Galaxy

Back

A large grouping of stars in space.

Front

Geocentric Model

Back

A model showing Earth located at the center of the universe.

Front

Heliocentric Model

Back

A model showing the Sun as a fixed point in the center of the Universe, with objects revolving around it.

Front

Milky Way Galaxy

Back

The galaxy in which Earth and the Sun are located.

Front

Orbit

Back

A curved path followed by a satellite as it revolves around the object.

Front

Solar System

Back

A star and the group of planets and other celestial bodies that are held by its gravitational attraction and revolve around it.

Front

Universe

Back

All of space and the matter space contains.