Gerard Kuiper (1905-73) was a very influential scientist and astronomer. After studying astronomy at the University of Leiden in the Netherlands, he moved to the United States in 1933. He founded the Lunar and Planetary Institute in Arizona in 1960 and later worked on early planetary probes. He discovered Miranda, a moon of Uranus, and Nereid, a moon of Neptune, and was the first to identify Carbon Dioxide as the major component of Mars's atmosphere. In 1951, he proposed the existence of the Kuiper Belt - where Pluto and other dwarf planets reside - though be believed it to be a remnant of the early Solar System.
- Universe by Martin Rees, ISBN 978-1-4093-7650-7