Dr. Mordecai-Mark Mac Low's work focuses on understanding the formation of planets, stars, and galaxies. At the smallest scales, he is studying the interaction of planets with their natal circumstellar disks. At scales of less than one light year, he has simulated the behavior of self-gravitating, supersonic, magnetized turbulence to understand the formation of the dense cloud cores in which protostars are observed. At scales of hundreds to thousands of light years, he is studying the influence of multiple supernova explosions on interstellar gas, and how clouds of star-forming molecular gas form. Finally, at the galactic scale of tens of thousands of light years, he studies the large-scale formation of stars in galaxies.