Russia to launch science mission probing dark energy

A Russian-built satellite hosting an array of X-ray telescopes is awaiting launch Friday from the Baikonur Cosmodrome in Kazakhstan on a mission to measure the mass and distance of colossal clusters of galaxies throughout the universe. The X-ray observatory, designated Spektr-RG, is scheduled to blast into space on top of a Russian Proton rocket at 1217:14 GMT (8:17:14 a.m. EDT; 5:17:14 p.m. Baikonur time) Friday to kick off Russia’s most prominent space science mission in seven years. More

(Source: SpaceFlight Now - Jun 21)