Advanced Satellite for Cosmology and Astrophysics

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Japan's fourth X-ray satellite, a joint project with NASA launched in February 1993. Its original name was ASTRO-D. Carrying four large-collection-area telescopes to scan X-rays in space, its missions included the verification of black holes and of particle acceleration. ASCA was destroyed when re-entering the atmosphere in March 2001, after observing more than 2 000 subjects.

Subjects: Astronomy and Astrophysics.

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