MAXI (Monitor of All-sky X-ray Image) is an instrument for observing X-rays. The instrument can study distant and weak X-ray objects like quasars, black holes, active galactic nuclei and gamma ray bursts. Observation of cosmic objects is expected to give answers on the present open questions concerning the structure of space, its origin and evolution.
MAXI detectors are manufactured by Oxford Instruments Analytical Oy under a contract with Japan Aerospace Exploration Agency (JAXA).
MAXI contains 12 large area Multi Wire Proportional Counters (MWPC). The detectors were launched with the Space Shuttle Endeavour and were installed on the INTERNATIONAL SPACE STATION (ISS) in July 2009. The detectors are placed in such a way that they are able to observe practically the entire sky every 90 minutes as the ISS orbits the Earth. Already in August MAXI recorded the initial X-ray map of the universe and observed its first gamma ray burst (GRB).
See more about ISS MAXI project:
JAXA ISS MAXI PROJECT
MAXI project results