The Atmosphere-Space Interactions Monitor is a climate observatory for the International Space Station - ISS. It is developed by the ASIM consortium for ESA. The ASIM consortium is formed by Terma A/S, Technical University of Denmark, University of Bergen, University of Valencia, Polish Academy of Sciences Space Research Center, and OHB Italia. The Technical University of Denmark is leading the scientific advisory board to ESA and Terma A/S is the prime contractor under ESA for the payload development. Initial phases started in 2004 to 2009, and development started in 2010. ASIM was launched April 2nd, 2018, with CRS-14 Falcon-9/Dragon by SpaceX. The budget of ASIM is 35-40 MEUR.
The primary objective of ASIM is to study Transient Luminous Event (TLE) and Terrestrial Gamma Ray Bursts (TGF).
ASIM carries two scientific instruments, the MMIA for observing TLEs in optical and near UV bands and the MXGS for observing TGFs in X and gamma ray bands. The platform consists of a data handling and power unit and the CEPA, a standard structural item for ISS external payloads for Columbus.