He is currently principal investigator for plasma packages on ESA's Mars Express and Venus Express missions and the Indian lunar Chandrayaan-1 mission, for ion sensors on Russia/China Phobos-Grunt mission, and co-principal investigator for ion mass analyser and energetic neutral atom sensor for ESA's BepiColombo mission to Mercury. He was principal investigator or coinvestigator for various ion, electron, and energetic neutral atom instruments on missions such as Phobos-2 (Mars), Mars-96 (Mars), Interball (Earth's magnatosphere), Munin (Swedish microsat), Astrid (Earth's magnatosphere), Double Star (Earth's magnatosphere), PRISMA (Swedish technology demostrator), MEAP (stratospheric balloon). He is author or co-author of about 200 publications in the field of space plasma physics. His primary research interests include environment and solar wind interactions with solar system bodies and space instrumentation.