Catherine L. Johnson is a planetary scientist known for her research on the magnetic fields of planets including Mercury, Venus, Earth and its moon, and Mars.
Following her Ph.D., she was a postdoctoral researcher at Carnegie Institution for Science until 1997, at which point she joined the IRIS Consortium where she worked until 2001.
In 2013, Johnson was elected a fellow of the American Geophysical Union who cited her "for significant contributions to understanding the magnetic fields and interior structures of the Moon and terrestrial planets".
[4] From 2019 until 2020, Johnson was the president Geomagnetism, Paleomagnetism and Electromagnetism section at the American Geophysical Union.
[15][16] Johnson is the only Canadian involved in the InSight mission,[17][18] which is led by the United States' National Aeronautic and Space Administration (NASA).