How do galaxies evolve by condensing gas to form stars? What makes planetary systems so diverse? These questions have been at the heart of astrophysics for decades. Hyperion will determine how star formation relates to the flow of gas into and out of molecular clouds; how massive stars disperse such clouds to end star formation; and how the gas is removed from the planet-forming disks around young stars like our Sun. The key to answering these three major questions is the FUV fluorescence of H₂, the simplest and most abundant molecule in the universe — and the main constituent of clouds and disks.