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Orbital Sciences likely to stop using engines used in rocket explosion

This image taken from video provided by NASA TV shows Orbital Sciences Corp.'s unmanned rocket blowing up over the launch complex at Wallops Island, Va., just six seconds after liftoff. The company says no one was believed to be hurt and the damage appeared to be limited to the facilities.
This image taken from video provided by NASA TV shows Orbital Sciences Corp.'s unmanned rocket blowing up over the launch complex at Wallops Island, Va., just six seconds after liftoff. The company says no one was believed to be hurt and the damage appeared to be limited to the facilities. AP Photo/NASA TV

NEW YORK – Orbital Sciences says it will likely stop using the type of engines that were employed when its unmanned Antares commercial supply rocket bound for the International Space Station exploded moments after liftoff last week.

READ MORE: Rocket crash stirs uncertainty about space tourism

The company says its investigation of the crash is continuing, but preliminary results point to a failure in one of its two main engines. Orbital says it still plans to fulfill its contract with NASA to deliver all remaining cargo to the Space Station by the end of 2016.

WATCH: Nearby onlookers flee following rocket explosion

Orbital Sciences Corp., based in Dulles, Virginia, says there will be no cost increase for NASA. It will introduce an already-planned upgrade to the Antares propulsion system early in 2016.

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Orbital doesn’t expect costs related to the accident to be material in 2015.