Dr Becky Smethurst discusses Messier 107 - also known as NGC 6171 - an Oosterhoff type I cluster. Extra M107 chat at: https://www.youtube.com/watch?v=6TvR9gRJQTk More links and info in full description ↓↓↓ Dr Becky's website: https://rebeccasmethurst.co.uk/ Her own YouTube: null On the Two Oosterhoff Groups of Globular Clusters: https://ui.adsabs.harvard.edu/abs/1973ApJ...185..477V/abstract Messier Objects playlist: http://bit.ly/MessierObjects Deep Sky Videos website: http://www.deepskyvideos.com/ Twitter: https://twitter.com/DeepSkyVideos Facebook: http://www.facebook.com/DeepSkyVideos More about the astronomers in our videos: http://www.deepskyvideos.com/pages/contributors.html Supported by the University of Nottingham https://www.nottingham.ac.uk/astronomy/ Back us on Patreon: https://www.patreon.com/deepskyvideos Video by Brady Haran