ASCA (Advanced Satellite for Cosmology and Astrophysics)

A graphic of ASCA is shown in light and dark shades of blue. The body of the spacecraft is bottle shaped, and an array of solar panels crosses on top of the widest part.
January 9, 2023
Historical DateJanuary 9, 2023
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An illustration of the ASCA spacecraft, developed by the Institute of Space and Astronautical Science in Japan. The colors depicted in this illustration are for artistic purposes only.

ASCA was an X-ray astronomy spacecraft that studied distant active galaxies, sources of the cosmic X-ray background, and other phenomena. The mission was developed by the Japanese Institute of Space and Astronautical Science with significant U.S. contributions, including NASA.

Launched: February 20, 1993

Decommissioned: July 15, 2000