Though 20th century work in exobiology sometimes formulated "audacious" ideas about extraterrestrial forms of life. The term exobiology was coined by molecular biologist and Nobel Prize winner Joshua Lederberg. Others deal with SETI and exobiology. NASA's interest in exobiology first began with the development of the U.S. Space Program. Preiss stated that electrogravitics, like exobiology, is "a science without a single specimen for study".