Climate observatory for the International Space Station.


ASIM is installed on ISS on the Columbus External Payload Facility.


Launched by Falcon-9, the CRS-14 Dragon transport vehicle carried ASIM to ISS inside the un-pressurized trunk.


ASIM was installed from Dragon trunk to the ISS Columbus module by means of extra-vehicular robotics.



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.

    Mass: 314 kg
    Dimensions: 122 cm x 134 cm x 99 cm
    Power: 200 W
    Heaters: 230 W



The primary objective of ASIM is to study Transient Luminous Event (TLE) and Terrestrial Gamma Ray Bursts (TGF).

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Camera CCD

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.

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Camera CCD



Images, videos, and more available in the ASIM Gallery.

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