Dr Becky Smethurst discusses Messier 106 (aka NGC 4258) - and the world of megamasers. More links and info in full description ↓↓↓ More Messier objects: http://bit.ly/MessierObjects More of our videos with Becky: http://bit.ly/Becky_Playlist Dr Becky Smethurst: https://rebeccasmethurst.co.uk/ Read and see more... Orion spectrum: http://www.bu.edu/prism/pages/orionspec_jpg.htm NGC 7213 spectrum: https://ned.ipac.caltech.edu/level5/March02/Netzer/Netzer9_3.html Evidence for a black hole from high rotation velocities in a sub-parsec region of NGC4258: https://www.nature.com/articles/373127a0 A geometric distance to the galaxy NGC4258 from orbital motions in a nuclear gas disk: https://www.nature.com/articles/22972 Amazing graphs via Numberphile: http://bit.ly/Amazing_Graphs 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 Back us on Patreon: https://www.patreon.com/deepskyvideos Video by Brady Haran