A commercial space company owned by Amazon founder Jeff Bezos has lost a challenge over NASAs plans to lease out one of the space shuttles dormant launch pads in Florida, officials said on Thursday. The company, Blue Origin, had filed a protest with the U.S. General Accountability Office, which arbitrates federal contract disputes. The GAO said in a decision it denied the companys protest. Blue Origin is vying against another company owned by Elon Musk, co-founder of PayPal and chief executive of electric car company Tesla Motors, to lease Launch Pad 39A at the Kennedy Space Center.