DIX Planetary Science Seminar
TESS has taken over the baton of planet discovery from the Kepler mission. Its full sky coverage has enabled the discovery of a wider range of peculiar planetary systems that are amenable to detailed follow-up observations. In this talk, I will discuss some insights on planet formation provided by these recent discoveries. Specifically, I will talk about 1) a new class of planets known as the ultra-hot Neptunes; 2) planet formation and orbital architecture in low metallicity environments (Fe/H <-0.5); 3) the partial disruption of resonant chain configuration in a 600-Myr multi-planet system.