SpaceX and NASA have delayed the next Dragon cargo launch to the International Space Station by two additional days, to Nov. 9.

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The robotic SpaceX mission, known as CRS-29, had originally been scheduled to lift off from NASA’s Kennedy Space Center (KSC) in Florida on Sunday evening (Nov. 5).

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If all goes according to the new plan, the Dragon will launch atop a SpaceX Falcon 9 rocket at 8:28 p.m. EST on Nov. 9 and arrive at the International Space Station (ISS) early on the morning of Nov. 11.

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This latest delay is related to an issue with one of the Dragon's Draco thrusters.

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During the initial propellant load in preparation for the CRS-29 mission, teams identified a leak of NTO (nitrogen tetroxide oxidizer) in a Draco thruster valve.

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Dragon is packed with about 6,500 pounds (2,950 kilograms) of supplies and scientific hardware for the trip.

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NASA experiment designed to study disturbances in Earth's atmosphere and a European Space Agency investigation that could improve water recovery on the ISS.

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Dragon is one of three robotic spacecraft that currently haul cargo to the orbiting lab.

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Dragon is reusable, but the other two freighters — Northrop Grumman's Cygnus vehicle and Russia's Progress craft

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