This video pans across Hubble observations of globular cluster Messier 9. This ball of stars (Hubble sees over 250 000 of them) is located towards the centre of our galaxy. A wide palette of colours is visible here, a testament to the varied temperatures of the stars in the cluster. Red stars are cooler, while blue ones are hotter.

Credit:
NASA & ESA

More information and download-options:
spacetelescope.org/videos/heic1205b/

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