The Falcon 9 was scheduled to launch from Space Launch Complex 40 at 11:29 a.m. ET.
A backup launch opportunity is 11:02 a.m. ET Sunday. But the 45th Weather Squadron predicts only a 10% chance of favorable conditions then. Florida is affected by a tropical depression's rain and winds.
SpaceX provides a livestream.
Also Sunday, SpaceX is planning to launch a Falcon 9 of 23 Starlink satellites from Vandenberg Space Force Base in California.
From Florida, this is the 21st Northrop Grumman Cygnus cargo spacecraft for NASA.
And it's the 10th flight of the first-stage booster supporting this mission, which previously launched Ax-2, Euclid, Ax-3, CRS-30, SES ASTRA 1P, and four Starlink missions. After first-stage stage separation, Falcon 9 will land on Landing Zone 1 at Cape Canaveral Space Force Station.
About 8,200 pounds of science and cargo supplies will be headed to the ISS.
The spacecraft includes water recovery technology, a process to produce stem cells in microgravity, studies of the effects of spaceflight on microorganism DNA, liver tissue growth and live science demonstrations for students.
Related Links
Rocket Science News at Space-Travel.Com
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