STAR CLASSIFICATION

1 MAIN SEQUENCE

This is the region where stars spend the majority of their lives – a star’s position in the main sequence is largely determined by its mass.

2 RED GIANTS

Most stars pass through this phase near the end of their lives, brightening and developing an atmosphere with a cool surface.

3 WHITE DWARFS

These hot stars are faint because of their tiny size – they are the burnt-out, slowly cooling cores of stars like our own Sun.

4 SUPERGIANTS

Brilliantly luminous high-mass stars that display a variety of colours as they move back and forth across the Hertzsprung– Russell diagram.