“Who gave him the 'authority' to do this?” “He didn't do it 'on his own authority' [=he didn't do it on his own]; he was acting 'under the authority of' the company president.” [=the company president gave him the power to do it]
No one 'in authority' objected to the plan. = No one 'in a position of authority' objected to the plan. [=no one with official power to make important decisions objected to the plan]
This office has 'authority' over personnel matters. [=this office has the power to make decisions about personnel matters]
(..) a detailed analysis through the ring. There's no mistake. The demons were sent by Krona. GUARDIAN: Most of you know Krona's story... ...how he defied authority... ...and created the Antimatter Universe billions of years ago. He nearly annihilated all of creation. As punishment he was turned (..)2011 Green Lantern: Emerald Knights