I am interested in using experimental approaches to expand our understanding of the universe on the largest and smallest scales. I am involved with the Laser Gravitational Wave Observatory (LIGO), which does exactly that; by pushing position sensing technology for macroscopic objects into the quantum regime, LIGO will detect Gravitational Waves. Yet at the same time LIGO style laser interferometers will reach a sensitivity that allows access to predictions of general relativity and quantum mechanics, the two seemingly incompatible foundations of modern Physics.