Distances in Space

Front

If two stars are 100 light-years apart, what does that mean?

Back

It takes 100 years for light to travel from one star to the other.

Front

Which distance is the greatest?

• the distance across the Milky Way galaxy
• the distance to the nearest star cluster
• the distance across the solar system
• the distance to the nearest galaxy

Back

the distance to the nearest galaxy

Front

Which is the bigger unit? Astronomical Unit (AU), Light Year (ly)

Back

Light Year (ly)

Front

Which unit of measurement would we use to measure the distance between Earth and another body within our Solar System? Options: Astronomical Unit (AU), Light Year (ly), Miles (mi), Kilometers (km)

Back

Astronomical Unit (AU)

Front

An Astronomical Unit (AU) is the distance between

Back

Sun and Earth

Front

How long does it take light from Proxima Centauri to reach Earth?

Back

4.3 years

Front

Express the distance between the Milky Way galaxy and the Andromeda galaxy. What is the most appropriate unit of measurement to use?

Back

light-year

Front

A light year is approximately...

Back

9,460,730,472,581 kilometres

Front

The distance that light can travel in a year is called...

Back

A light year

Front

Astronomical units are used for: Distances within a solar system, Distances between solar systems, Distances within galaxies, Distances between galaxies

Back

Distances within a solar system