The planned launch of the Antares rocket carrying three CubeSats with amateur radio payloads has been postponed.

Space Flight Now report the countdown for the launch of the first Antares rocket was halted with 12 minutes on the clock after a second stage umbilical prematurely separated.

The test flight is to prove the booster’s reliability before future flights to service the International Space Station. A new launch date has yet to be announced.

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