Live coverage: Kennedy Space Center to reopen Friday

The United Launch Alliance Delta 4-Heavy rocket fired away from Cape Canaveral at 1:51 p.m. EDT today to deploy a covert surveillance satellite for the U.S. National Reconnaissance Office.

Russian cosmonaut Alexey Ovchinin and NASA astronaut Nick Hague landed safely downrange in Kazakhstan on Thursday after a Soyuz booster failure cut short their ascent into orbit from the Baikonur Cosmodrome toward the International Space Station. The emergency landing was the first Soyuz in-flight abort since 1975.

If SpaceX is able to dispatch a robotic Dragon capsule to land on the red planet in 2018 on time and successfully, engineers stand to get a lesson on what it will take to eventually send humans there, capturing key data on an untested Mars landing scheme a decade sooner than NASA could do it, space agency officials said this week.