Launch coverage on NASA TV will begin at 5 p.m. EST.
Northrop Grumman and NASA rescheduled the February 14 Antares launch attempt due to strong upper level winds. They say the weather looks favorable right now but they do have another chance to launch on Sunday if things don't go as planned on Saturday. Crews also refreshed critical science equipment on board that has a limited shelf life.
As with all launches to the space station, the launch window is instantaneous, meaning any problems would cause a postponement to the next day or a future date.
Visitors are reminded that alcohol, pets and firearms are not allowed on the NASA Visitor Center grounds.
A launch Saturday would result in a capture of Cygnus on Tuesday, Feb. 18, at approximately 4:05 a.m. Rendezvous and capture coverage begins at 2:30 a.m. Installation coverage will begin at 6 a.m.
The launch of a Northrop Grumman Antares rocket carrying an uncrewed Cygnus cargo ship filled with vital supplies - including, yes, some chocolate, cheese and other treats for astronauts - has been delayed at least 24 hours.
The capsule will carry equipment for multiple science experiments.
Because the last leg of the unmanned Cygnus is doomed anyway, NASA researcher Gary Ruff said it is "the flawless vehicle for us to do what we really want to do, which is burn larger samples..."