M21 – 8-million-year-old stars – Deep Sky Videos

Messier 21 (NGC 6531) provides an opportunity to discuss the age spread of stars in a cluster.
Featuring Professor Mike Merrifield.
More reading on this research: http://bit.ly/2c56JYs
More Messier Objects: http://bit.ly/MessierObjects

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Made possible by:
The University of Nottingham
and The University of Sheffield.

Video by Brady Haran

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