The weather outlook on Monday remains extremely favorable with a 95 percent chance of acceptable conditions at launch time. SpaceX is now grounded, meanwhile, because of a launch pad explosion last month.
The unmanned cargo ship will carry more than 5,100 pounds of supplies and vehicle hardware to the International Space Station in a resupply mission.
During that 2014 accident, the Antares booster's first stage suffered a failure in one of its two Aerojet Rocketdyne AJ26 engines, refurbished versions of engines originally built for the Soviet-era N-1 moon rocket.
Since then, Orbital ATK launched two Cygnus missions from Cape Canaveral in Florida on United Launch Alliance's Atlas V rocket. We had just developed this new rocket, and the first flights were really spot on and worked really well.
The elevation at which the Antares rocket will appear above the horizon for those on the East Coast. NASA's inspector general raised a red flag about the omission in a September 2015 report. The contractor's schedule was too tight to allow for a separate test flight, according to the inspector general report.
Cygnus is also carrying a new station research facility that will enable a new class of research experiments by allowing precise control of motion in the microgravity environment aboard the ISS.
"Every cargo mission is like Christmas, right, and they never know what they're going to find when they open the hatch", said Culbertson, a former astronaut who lived on the space station more than a decade ago.
Orbital and SpaceX are the two private companies that NASA has hired to keep the space station stocked. It is one of the crew's few lifelines - lines that have become increasingly frayed in recent months.
The launch is now scheduled for October 17 at 7:40 p.m. EDT.
The weather forecast calls for partly cloudy conditions, a southwest wind of 9 miles per hour and a low of about 59 degrees. A planned nighttime launch this weekend from Wallops Island on Virginia's Eastern Shore will be visible along parts of the coast if the skies are clear.
The weather has presented its own challenge for flight engineers.
The NASA tracking station in Bermuda received minor damage from Hurricane Nicole when it passed over the island October 13th, 2016.
Company officials were ecstatic on the eve of the launch.