From DeepSkyVideos.

Professor Mike Merrifield discusses globular cluster Messier 55 and the rotation of its stars.
More links and info in full description ↓↓↓

Professor Merrifield is an astronomer at the University of Nottingham: https://www.nottingham.ac.uk/physics/people/michael.merrifield

PAPER: The internal rotation of globular clusters revealed by Gaia DR2 – https://arxiv.org/abs/1806.02580

More videos with Professor Merrifield: http://bit.ly/Merrifield_Playlist

Professor Merrifield on Objectivity: https://youtu.be/PccGklgNlHs

Messier Objects playlist: http://bit.ly/MessierObjects

Deep Sky Videos website: http://www.deepskyvideos.com/
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https://www.nottingham.ac.uk/astronomy/

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Video by Brady Haran

Just a little note: We filmed this in 2018 but it got a little "lost" in the edit queue and is only appearing now in 2021.