Launch of the Curiosity Mars rover

As viewed from the ITL Causeway at the Cape Canaveral Air Force Station, the United Launch Alliance Atlas 5 rocket departs for space with the EchoStar 19 satellite to delivery Internet connectivity across the U.S.

The Antares rocket, Orbital ATK’s medium-class booster now with modern RD-181 engines, launches at 7:45 p.m. EDT (2345 GMT) from NASA’s Wallops Flight Facility on the eastern shore of Virginia.

NASA astronaut Kate Rubins and Soichi Noguchi, a Japanese astronaut who last walked in space more than 15 years ago, ventured outside the International Space Station Friday and completed assembly of two solar array support fixtures, part of a $100 million power system upgrade.