Proton M launches X-ray observatory – Satellite News Digest

Rocket: Proton M/Block DM-03; Payload: Spektr-RG [Spektrum-Röntgen-Gamma]; Date: 13 July 2019, 1230 UTC; Launch site: Baikonur, Kazakhstan.

http://www.sat-nd.com/archive/?id=2019071400

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