IMAGE 1000_99\73.Lbm,Technicians carry out final preparations on the German Rosat (Roentgen satellite), which is launched by Delta from Cape Canaveral on June 1, 1990.
IMAGE 1000_99\74.Lbm,Rosat X-ray picture of the remnants of a supernova seen in 1572 by the Danish astronomer Tycho Brahe, which was called Tycho's star.
IMAGE 1000_99\75.Lbm,Rosat X-ray picture of the constellation Auriga (the Charioteer), showing a hitherto unknown supernova remnant.
IMAGE 1000_99\76.Lbm,The cluster of galaxies known as Abell 2256, viewed at X-ray wavelengths by Rosat.
IMAGE 1000_99\77.Lbm,Rosat image of the powerful X-ray source Cygnus X-2, thought to be a neutron star orbiting a normal star. X-rays are produced when matter from the normal star is attracted to the superdense neutron star.