One of Nancy Roman’s earliest publications was in 1955, after her work in the Yerkes and McDonald Observatories, in the Astrophysical Journal Supplement Series and was a catalog of high velocity stars. She documented new “spectral types photoelectric magnitudes and colors and spectroscopic parallaxes for about 600 high-velocity stars.”[11] Then in 1959, Roman wrote a paper on the detection of extraterrestrial planets.[2] Roman discovered that stars made of hydrogen and helium move faster than stars composed of other heavier elements. One of her other discoveries was finding that not all stars that were common were the same age.