Spektr-RG Launches To L2 Lagrangian Point, Location Of Observatories And Lunar Probe 

Russia Spektr-RG Launches To L2 Lagrangian Point Aboard Proton-M Booster Designed For Lunar Payloads, First Successful Russia Mission Beyond LEO Since Soviet Union; Payloads Are Astronomical Roentgen Telescope X-ray Concentrator (ART-XC) And Extended Roentgen Survey Imaging Telescope Array Built By Germany Max Planck Institute; Spektr-RG Will Survey Sky For Galaxy Clusters, Black Holes And Hypothetical ‘Dark’ Energy; Sun-Earth L2 Point Is Location Of ESA Gaia Space Observatory, Former Stop Of Planck Observatory And Chang’e-2 Lunar Probe

Credits: Russia Academy of Sciences, Roscosmos