Syzygy is produced by Chris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.Find us on Twitter: @syzygypod twitter.com/SyzygyPodOr just visit us at home: syzygy.fmEmily at the University of York: www.york.ac.uk/physics/people/brunsden/Chris online: kipstewart.comSome of the things we talk about in this episode:TESS launch: https://www.youtube.com/watch?v=y3niFzo5VLITESS’s crazy orbit: https://heasarc.gsfc.nasa.gov/docs/tess/operations.htmlTESS’s telescopes: https://heasarc.gsfc.nasa.gov/docs/tess/the-tess-space-telescope.htmlEmily’s research: https://www.york.ac.uk/physics/people/brunsden/#researchTypes of  variable stars: https://www.space.com/15396-variable-stars.htmlModes of vibration on a string: https://www.youtube.com/watch?v=BSIw5SgUirgRed Giant stars: https://www.universetoday.com/24720/red-giant-star/Animation of a stellar pulsation: https://www.youtube.com/watch?v=-IVm_aE3k98 The Sun’s core is rotating faster than its surface: https://www.nasa.gov/feature/goddard/2017/esa-nasa-s-soho-reveals-rapidly-rotating-solar-coreThe Song of the Sun: https://www.youtube.com/watch?v=Z2eQPOo95l0&feature=youtu.beSinging Stars: https://www.youtube.com/watch?v=IzeJq3CbiZM