A European Space Agency X-ray space telescope launched in 1999 and named for Isaac Newton, carrying the largest mirrors ever built for X-ray astronomy at the time to achieve unusually high sensitivity. It has operated for decades studying black holes, neutron stars and hot gas in clusters of galaxies.
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Source Wikipedia (space and spaceflight articles)
Additional Source Wikipedia: European Space AgencyLead section
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1. Wikipedia (space and spaceflight articles)
Wikimedia FoundationXMM-Newton, Wikipedia - lead section, observing band (xray)Quote, XMM-Newton, Wikipedia - lead section, observing band (xray)
XMM-Newton is similar to NASA's Chandra X-ray Observatory, also launched in 1999.
Wikipedia: European Space Agency
Wikimedia FoundationOperated By: European Space Agency, Lead sectionQuote, Operated By: European Space Agency, Lead section
The European Space Agency (ESA; pronounced /ˈiːsə/ EE-sə) is a 23-member international organisation devoted to space exploration.
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