Video: Soyuz MS-01 leaves the space station for landing

Targeting a resumption of Antares cargo launches to the International Space Station as soon as July, Orbital ATK plans to roll out an upgraded Antares rocket to a launch pad in Virginia this week for a 30-second firing of the booster’s new engines.

Two astronauts floated outside the International Space Station Sunday for the first in a series of spacewalks to upgrade the lab’s aging solar power system, assembling a support fixture that eventually will hold a new solar blanket.

The latest launch date was announced late Wednesday evening, following a Tuesday night notice that May 25 was off the table. Liftoff of the Atlas 5 rocket on June 1 is set for 12:25 p.m. EDT (1625 UTC).