We were in our hotel room watching TV. My son asked " what is that orange light in the sky?". We were situated next to Los Arcos Pier and the orange orb light was hovering approximately 100 ft. above it. We looked and watched it . Suddenly it shot across the bay toward Neuevo Vallarta getting higher and then it vanished . Initially we thought perhaps it was an aircraft on fire due to the orange light against the night sky but the speed it travelled across the bay made us realize no aircraft could be in one place and in another within seconds.