Universal

Universe

Galaxy

Solar system

Inner and Outer planets

Universe, galaxies, solar system, stars and planets

Planets, stars, solar system, galaxies, universe

Solar system, galaxies, stars, planets, universe

Universe, solar system, galaxies, planets and stars

Component 4

Component 2

Component 1

Component 3

The average distance between the Earth and the Sun

The average distance between the Sun and Neptune

The diameter of the sun

The time it takes light to travel across our solar system

Distances within a solar system

Distances between solar systems

Distances within galaxies

Distances between galaxies

A light second

A light minute

A light month

A light year

Astronomical units

Light seconds

Light years

Scientists want to sound smart.

Hubble discovered these units and wanted to use them.

Space is too small to use km, it wouldn't make sense.

Space is too big, vast, enormous to use traditional units, like miles.