UPDATE 2-Orbital Sciences set to retire suspect motor in rocket explosion
November 05, 2014 at 11:23 AM EST
MOJAVE, Calif. Nov 5 (Reuters) - An investigation into the explosion last week of Orbital Sciences' Antares rocket pointed to a likely problem with a turbopump in the booster's main engine, a refurbished Soviet-era motor that Orbital expects to discontinue, the company chief executive said on Wednesday.
