This Hangout took us well into the past, as we delved into the very early Universe. The LHC can recreate these early-Universe conditions in the lab by colliding heavy ions together. But why do we collide these different particle species? What is in store for the heavy-ion collisions after the end-of-year break? What is this mysterious quark-gluon plasma? Experts from the LHC's heavy-ion specialist, +ALICE Experiment, answered your questions about these and many more related topics!