The Hakucho and the Spektr-R are both types of what?
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). Spektr-R: Spektr-R (or RadioAstron) is a Russian scientific satellite with a 10 m radio telescope on board.
satellite