In this episode we find two very excited Skyentists: Kirsten receives an unexpected birthday gift and Ángel tells us his intense experiences at the Anglo-Australian Telescope trying to observe for his research program while also helping in the TV show "ABC Stargazing Live", 22-24 May 2018. White dwarf stars and type-Ia supernova are the main theme of this episode, but also the amazing contribution of citizen scientists who, inspired by "ABC Stargazing Live", helped to discover not one but two transients in distant galaxies. Interestingly, it was Ángel and his team who, using data collected with the AAT the nights of the TV shows, confirmed the classification of these two transients as type-Ia supernova. Their discoveries were discussed in two science papers led by Ángel that included famous physicist Prof Brian Cox and ABC journalist Julia Zemiro as co-authors! The Skyentists also answer some questions received as feedback and solve the problem of the center of mass of the Earth-Moon system. "What's Up!" is dedicated to Omega Centauri or, as Kirsten prefers, "Oh My God Centauri!". Next episode in just 1 week!