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Week 5: The Sun and the stars

Completion requirements

Photograph of open cluster M29, taken with COAST. The image shows four bright stars in an approximately rectangular configuration near the centre. These stars are a bright bluish-white colour. These are surrounded by about half a dozen slightly fainter stars and then by an increasing number of ever fainter stars. The fainter stars are more yellowish in colour than the brighter stars.

 4 Comparing the Sun with other stars