How Big and How Far?

How big?
This resource uses scale models to understand the huge differences between the Sun and other stars in the galaxy. The spreadsheet gives scales for the Sun and five other stars, ranging from the gigantic Betelgeuse to tiny Sirius B. Students can draw out these scale models using pencils and string.

How far?
In this resource, students look at the distance in light years from the Sun to the stars in the constellation of Orion. It is suggested that a graph could be plotted to show the relative distances. The aim is to understand that although stars appear close together when viewed from the Earth, they are in fact at very different distances away.

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