Live coverage: Soyuz crew lands in Kazakhstan

Sporting a new blue and white paint scheme to mark the upcoming 60th anniversary of the first human spaceflight, a Russian Soyuz rocket loaded with 38 international satellites has rolled out to its launch pad at the Baikonur Cosmodrome in Kazakhstan ahead of a planned liftoff Saturday.

Concluding 80 days attached the International Space Station, the commercial Cygnus cargo ship will be detached to fly away Tuesday for an unprecedented onboard fire experiment before re-entering the atmosphere next week.

The United Launch Alliance Atlas 5 rocket, standing 197 feet tall and and weighing 1.2 million pounds, unleashes 2.4 million pounds of thrust from its main engine and four solid-fuel boosters at 6:42 p.m. EST (2342 GMT) Saturday to launch the GOES-R weather observer for NASA and NOAA from Cape Canaveral, Florida.