Photos: Most powerful Atlas 5 puts 15,000-pound satellite in orbit

A rocket-transporting railroad car ferried a Proton rocket to its launch pad Friday at the Baikonur Cosmodrome in Kazakhstan for final checkouts and testing before the vehicle’s scheduled June 21 liftoff with the Russian-German Spektr-RG X-ray telescope.

SpaceX raised a 215-foot-tall Falcon 9 rocket on pad 39A at NASA’s Kennedy Space Center in Florida this week, shortly after the launcher rolled out of the company’s hangar with a Crew Dragon spaceship to ferry four astronauts to the International Space Station.

An Ariane 5 rocket will fire into the sky from French Guiana just after sunset Tuesday and deliver two payloads to orbit for Intelsat, one of the world’s largest commercial satellite operators, and Broadcasting Satellite System Corp. of Japan.