Bexus is bilateral German-Swedish cooperation to offer students experiment opportunities using sounding rocket and balloon flights from Esrange in Northern Sweden.

German students have the opportunity to utilise half of the joint programme pay load. Sweden has invited ESA Education to use most of the Swedish share for a European-wide programme.

BEXUS experiments are lifted by balloon from Esrange to an altitude of 20-35 km, depending on total experiment mass (40-100 kg). The balloon has a volume of 12 000 m3 and the experiments are hanging 65-100 m below the balloon.