If successful, the launch will be viewable across much of the Mid-Atlantic region.

Liftoff is scheduled for 7:40 p.m. Eastern time.

To see the rocket, look toward the southeast if you’re in the D.C. area. At its highest, the rocket will zip about 10 degrees above the horizon. It should be visible about 90 seconds after launch.

“Antares should appear as a bright, moving star,” Space.com says. “Observers who use binoculars might also be able to see a short contrail.”

Be aware that it is not at all uncommon for rocket launches to be scrubbed due to weather, technical issues or security concerns.

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Monday’s launch was originally scheduled supposed to occur at 8:03 p.m. Sunday, but was postponed “due to a ground support equipment (GSE) cable that did not perform as expected during the pre-launch check out.”

In 2014, a launch was pushed back a day because of the presence of a small, unidentified sailboat not far from the launch site.

Right now, Monday evening’s weather appears promising with mostly clear skies and light winds predicted.

Orbital ATK is launching the rocket as part of its International Space Station resupply mission. After reaching low Earth orbit, the rocket ejects a cargo-carrying capsule — named Cygnus — that then attaches to the International Space Station.

Orbital has conducted several prior launches as part of this mission. After the last launch of an Antares rocket failed Oct. 28, 2014, Orbital launched two other rockets, named Atlas V, from the United Launch Alliance in Cape Canaveral.

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The return to Wallops Island for a launch has been delayed many times, according to Space Policy Online, as Orbital ATK attempted to replace Antares’s engine. The rocket now has a brand-new Russian engine and is ready to race into space.