Oct 1 1990
From The Space Library
The High Resolution Imager, an instrument for the study of cosmic x-rays aboard the German Roentgen Satellite launched last June, sent back its first light pictures to a ground station near Munich. The cooperative program between the United States, West Germany, and Great Britain, called ROSAT, excited several international scientists. The pictures sent back represented a neutron star 3,000 light years from Earth, a supernova that occurred in this galaxy 320 years ago and 10,000 light years away, and a cluster of galaxies known as Abell 2156. (NASA Release 90-133)
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