I am a Ph.D. student at the historic Niels Bohr Institute at the University of Copenhagen working with theoretical multimessenger astrophysics, a fast-growing field that combines particle physics with astrophysics and astronomy. My Ph.D. project focuses on finding the sources of high-energy neutrinos, which are very light particles that arrive at Earth from far away, even from outside of our own galaxy. With tremendously high energies and abilities to zip through almost anything, these ghostly particles give us a unique way of studying the extragalactic universe and figuring out what is out there. I am a theoretical physicist working with the big international IceCube experiment, a gigaton neutrino detector buried in the ice on the South Pole. By probing theoretical models with experimental data, I hope to help solve the mysteries of the origin of the most energetic particles we have ever seen in our universe.