In the United States he studied at the University of Minnesota, and earned his Bachelor of Physics, 1961, his Master of Science at the University of Iowa in 1963 and his Doctor of Philosophy in 1965 in Physics.
He has contributed to many of the United States" unmanned space exploration programs of the Solar System and beyond. He has contributed to exploration missions to almost every planet of the Solar System. In 1999, the International Astronomical Union named the asteroid 8323 Krimigis (previously 1979 UH) in his honor.
He was a student of James Van Allen.
He is also the President of the Greek National Council for Research and Technology. Krimigis has been the Principal Investigator for MIMI on Cassini–Huygens, the Low Energy Charged Particle Experiment (LECP) on Voyager 1 and Voyager 2, and for the CPME on Explorer 47.
He is Company-Investigator for Local Area Network /Hawaii-SCALE on Ulysses solar polar orbiter, EPIC on GEOTAIL, electronic data processing for Galileo mission, TRD on Mariner 3, and for the LECR on Mariner 4. Krimigis has also worked on the Advanced Composition Explorer, the Mariner 5, MESSENGER and New Horizons programs.
Academy of Athens]
He is Head Emeritus of the Space Department Applied Physics Laboratory at Johns Hopkins University Laurel, Maryland, United States of America and he is a member of Academy of Athens, Greece, where he has the Chair of Science of Space. Member of the Academy of Athens, Chair of Science of Space (2004).
Married Maria Anastasopoulou, 1990. Children: Michael, John.