Globular cluster NGC 6752
This image, taken with the NASA/ESA Hubble Space Telescope, shows a part of the globular cluster NGC 6752. The observations were made to study white dwarfs within it and to use these stars to measure the age of the globular cluster.
Analysing the data, astronomers discovered a previously unknown galaxy behind the globular cluster. The galaxy, nicknamed Bedin I, is visible as a collection of faint stars at the top left of the image.
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