The huge rocket’s engines briefly ignited as the countdown neared zero, but a computer aborted the launch at T-minus 3 seconds, according to United Launch Alliance (ULA), which is conducting the launch.
according to a statement from ULA.
Crews made sure the rocket was safe and drained its cryogenic fuels once the launch was officially canceled.
President and CEO Tory Bruno said on Twitter.
A new launch date has not been announced, but ULA said that it would be at least seven days before they could try again.
United Launch Alliance is a joint venture between Boeing and Lockheed Martin.
military launch competition worth at least $653 million.