English Solrad Cited by user Neopeius on 03 Jan 2019 Solrad (short for "Solar Radiation," sometimes presented as "SOLRAD") was an American series of satellites sponsored by the US Navy in a program to continuously monitor…
English History of X-ray astronomy Cited by user Steve Quinn on 18 Nov 2009 In 1965 the Goddard Space Flight Center program in X-ray astronomy was initiated with a series of balloon-borne experiments.
English X-ray astronomy Cited by user Materialscientist on 16 Nov 2009 X-ray astronomy is an observational branch of astronomy which deals with the study of X-ray observation and detection from astronomical objects.