| …the observatory carries a plaque commemorating Ehricke and eight others for pioneering the extension of classical celestial mechanics to spaceflight mechanics, which was fundamental to our very spaceflight capability. Ehricke’s Space Flight Vols. I and II, “…the efforts of decades…stand as monumental contributions to this science and shed new rays of knowledge on the still dark areas of space,” wrote Shirley Thomas in Men of Space. |