The department for Extraterrestrial Physics in the Institute for Experimental and Applied Physics at the Christian-Albrechts-Univerität (CAU) has more than 30 years of experience in designing and building energetic particle instruments for space missions and analysing the data. Instruments have been delivered to many scientific satellites (HELIOS, Ulysses, SOHO, STEREOs, Solar Orbiter) as well as the Space Shuttle and Space stations (MIR, ISS) and also planetary/lunar missions (MSL, Chang'E4). The CAU team has joined the AMS collaboration in 2018.