Lennard A. Fisk

Lennard A. Fisk

Professor Emeritus


Climate & Space Research Building University of Michigan
2455 Hayward Street
Ann Arbor, MI 48109-2143

Primary Website

Additional Titles

  • Thomas M. Donahue Distinguished University Professor Emeritus of Space Science

Related links


  • Ph.D., Applied Physics, University of California-San Diego

Professional Service

  • Vice Chair, Committee on the Rationale and Goals of the U.S. Civil Space Program, Space Studies Board, National Research Council
  • Former Chair, National Academy of Sciences Space Studies Board
  • Served on numerous advisory committees to the National Research Council and NASA, including the Space Science Board and the NASA Advisory Council

Research Interests

  • Solar and Heliospheric Physics
  • Developing new theoretical concepts and models for the behavior of the solar atmosphere and its expansion into space to form the solar wind
  • Developing new theoretical concepts for the acceleration and behavior of energetic particles in the heliosphere
  • Developing new theoretical concepts and models for interstellar neutral gas and dust behavior in the heliosphere and subsequent ionization to form the so-called pickup ion population
  • Developing new theoretical concepts and models for interaction between the heliosphere and local interstellar medium
  • Developing new flight hardware to measure the composition of plasmas in the heliosphere


  • U-M College of Engineering Stephen S. Attwood Excellence in Engineering Award
  • College of Engineering Collegiate Professor of Space Science
  • Member, National Academy of Sciences
  • Foreign Member, Academia Europaea
  • Fellow, American Geophysical Union
  • Elected Member, International Academy of Astronautics
  • NASA Distinguished Service Medal
  • NASA Outstanding Leadership Medal
  • AIAA Space Science Award
  • International Academy of Astronautics Basic Science Award Developed theory for origin of a new component of cosmic rays, the anomalous component
  • Developed theory for dramatic enhancements of the isotopic abundances of particles accelerated in solar flares
  • Introduced first numerical model for the behavior of cosmic rays in the solar wind
  • Developed first three-dimensional model for the modulation of galactic cosmic rays in the heliosphere
  • Developed first successful model for the acceleration of energetic particles at standing shock waves in the solar wind
  • Developed new theoretical concepts for the behavior of the heliospheric magnetic field
  • Founding member, Institute for the Study of Earth, Oceans and Space, University of New Hampshire
  • Associate Administrator, Space Science and Applications and Chief Scientist, NASA
  • Principal Investigator, NASA Solar Terrestrial Theory Program for the study of the Solar Corona and the Solar Wind
  • Co-Investigator, Solar Wind Ion Composition Spectrometer experiment, NASA/ESA Ulysses mission and NASA Wind mission to study the heliosphere at high heliographic latitudes
  • Chairman, Board of Trustees, University Corporation for Atmospheric Research
  • Director, Orbital Sciences Corporation
  • Founder, Michigan Aerospace Corporation