sentences:  Parsons soon constructed a solid-fuel rocket engine, and with Forman corresponded with pioneer rocket engineers including Robert H. Goddard, Hermann Oberth, Konstantin Tsiolkovsky, Willy Ley and Wernher von Braun.Parsons and von Braun had hours of telephone conversations about rocketry in their respective countries as well as their own research.Parsons graduated from University School in 1933, and moved with his mother and grandmother to a more modest house on St. John Avenue, where he continued to pursue his interests in literature and poetry.