Daily cosmobite: a red giant

27_Orion with Betelgeuse labelled_Nick LombThe bright star at the bottom of Orion in the eastern sky is Betelgeuse. It is a cool giant star many hundreds of times wider than our Sun. Astronomers call such stars, ‘red giants’. The name Betelgeuse comes from an Arabic phrase meaning, ‘the armpit of the central one’.

The stars of Orion with Betelgeuse labelled. Photo Nick Lomb

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