About: http://webisa.webdatacommons.org/147971141

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	While optical telescopes use either lenses or mirrors as objectives to form an image, high energy beams such as X-rays permeate most matter, and therefore are unaffected by conventional mirrors or lenses.
http://www.w3.org/ns/prov#wasQuotedFrom	esa.int