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Wiki information Hakuch:
Hakuchi was a Japanese era name after the Taika era and before Shuchō. This period spanned the years from February 650 through December 654. The reigning emperor was Kōtoku-tennō.
Hakucho was Japan's first X-ray astronomy satellite, developed by the Institute of Space and Aeronautical Science. It was launched by the ISAS M-3C-4 rocket on February 21, 1979 and reentered the atmosphere on April 16, 1985. It was a replacement for...