The outskirts of galaxies like the Milky Way (MW) are important testing grounds for our understanding of galaxy formation and evolution.
The recent tension between early- and late-Universe measurements of the Hubble constant highlights the necessity for independent and precise probes such as the time-delay cosmography.
Being complex systems containing vast amounts of gas, dust, and stars, galaxies allow us to study the Universe in great detail. It is inside these systems that stars form, and transform the simplest of elements, hydrogen, into heavy elements essential for life as we know it.
Recent observations of binary black hole and binary neutron star mergers have ignited interest in the formation and evolution of compact-object binary systems.
