What is "hakucho"

Hakucho (also known as CORSA-b before launch) was Japan's first X-ray astronomy satellite, developed by the Institute of Space and Aeronautical Science (then a division of the University of Tokyo). 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 the CORSA satellite which failed to launch due to rocket failure on February 4, 1976.

The and were Japanese limited express train services which operated between and via the undersea Seikan Tunnel from December 2002 until March 2016. The services were operated by East Japan Railway Company (JR East) and Hokkaido Railway Company (JR Hokkaido) respectively.