Daniel's research focuses on exoplanets, with a particular emphasis on habitable planets and planetary systems. He leads large programs to understand the formation and habitability of nearby planetary systems (Alien Earths), to search for giant and earth-like exoplanets (Scorpion Survey, Project EDEN), and to characterize and map exoplanet and brown dwarf atmospheres (Cloud Atlas and ACCESS). He also leads the Nautilus Space Observatory concept, a project that explores a radical novel space telescope architecture with the goal of characterizing a thousand potentially earth-like exoplanets.