Welcome to Michael Janssen.org

Dr. Michael Janssen has over forty years of experience in radio astronomy and space research. He is currently a Senior Research Scientist at the Jet Propulsion Laboratory with roles in the Cassini mission to Saturn, ESA's Rosetta mission to land on a comet, the Planck mission to observe the cosmic background, and the New Frontiers Juno mission to investigate the origin and internal structure of Jupiter. For his thesis project to study the atmosphere of Venus, he and fellow student Richard Hills built the world's first millimeter-wavelength interferometer at UC Berkeley's Hat Creek Radio Observatory. After coming to JPL in 1972, he participated in the conception and development of the Cosmic Background Explorer (COBE) mission. He was a member of the COBE Science Working Group and played a major role in implementing the Differential Microwave Radiometer experiment on COBE that discovered the origin of structure in the universe. In the same period he edited a book on the microwave remote sensing of atmospheres that is widely used in the field. Afterwards he became involved in the management of the Earth & Space sciences Division at the lab and worked to improve the climate for research in the Division and at the Laboratory. He is now focusing on his flight involvements as lead for the Cassini RADAR radiometer, now in orbit around Saturn, and as Lead Co-Investigator for the Juno Microwave Radiometer, launched in 2011 and scheduled for arrival at Jupiter on July 4, 2016.