If astronomers had a favourite wavelength, 656.28 nm would be high on the list! Featuring Dr Meghan Gray. More from this interview: http://youtu.be/4AZae91Qwd8 Pete Lawrence, sun watcher: https://youtu.be/FSSdDonnYm8 GranTeCan with Brady: https://youtu.be/9YgACusQaTE ALMA:https://youtu.be/eAQZp6yTR2Q Where did the Sun come from: https://youtu.be/ZW1NP_Cb0Go Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/sixtysymbols This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Sixty Symbols videos by Brady Haran http://www.bradyharanblog.com Email list: http://eepurl.com/YdjL9