During the 40s and 50s there was a huge enthusiam for x-rays - you could even get them in shoe shops
http://www.orau.org/p...fittingfluor/shoe.htm
X-ray crystallography is a technique for finding the structure of materials from the way they interact with X-rays. This techique was used by Crick and Watson to shot the famous double Helix structure of DNA
This is what the picture looked like
http://ysm.research.y...cles-protein-xray.jpg
in 1978 NASA launched the first X-ray telescope
http://en.wikipedia.o.../Einstein_Observatory X-ray observatories give us evidence of balck holes