Broadly, I study compressible turbulence (random fluid motions) and supersonic reacting flows (combustion). I'm currently investigating the interaction of turbulence with detonation waves, a process that occurs in nature (e.g., Type Ia supernovae) and terrestrial energy conversion processes (e.g., detonation engines and accidental industrial explosions). I've developed a theoretical framework (regime diagram) for describing detonation-turbulence interaction. Recently, I've started to probe various regimes of interaction by conducting numerical simulations using high performance computing (HPC).
The possibility (or probability) of life existing elsewhere in the universe and the origins of humanity and the universe are elusive scientific questions that have profound consequences if answered. I think we will only ever asymptotically approach the truth to these questions. Nevertheless, the journey towards a better understanding of the cosmos is a worthy pursuit which yields benefits for our terrestrial life: the development of heavy-lift launch vehicles not only enables interplanetary travel, it also allows for point-to-point cargo and human transport on Earth which is necessary to respond faster to natural disasters and keep the world connected. Moreover, uncovering mysteries in our own Solar System (for instance, metallic hydrogen in Jupiter) can aid our understanding of chemical and physical processes that occur on Earth. Space possesses endless possibilities and has always been a deep well of inspiration throughout my life.
This is a tough question. If I had to pick one point to visit, I'd probably go to the Pillars of Creation nebula. I remember vividly seeing pictures of it in science books as a child and drawing pictures of the nebula. Since I can travel to any point in the universe instantly, I'll also assume I have the ability to fast-forward the clock. I'd then want to see the process of planet and star formation, and hopefully (much later in time), a supernova. But if not, I'm content with getting an up-close view of the pillars.
Most likely in the mountains hiking, backpacking, or skiing. I've skied all my life and enjoy chasing powder days. I also love playing board games with friends.
Surely You're Joking, Mr. Feynman