Bright white object doing unatural manouvresMe and my son were fishing just outside Brisbane whilst on holiday in Australia.It was mid afternoon when i noticed an extremely bright white light in the sky over the sea in front of us. I told my son to look at it as well.It was like a round ball of pure white light. It was moving from right to left at probably the speed of a normal passenger jet. It then stopped still and remained stationary for about 30 seconds. It then moved off again in the same direction and passed a cloud (there was only 1 or 2 clouds in the sky). The cloud was very white but the object could be easily seen as it flew in front of it as it was a pure white colour. It passed the cloud then stopped again and flew up very fast in a semicircular movement from left to right, stopped again in roughly the original position that i first noticed it and stopped again for about 30 seconds or so before moving from right to left again before stopping. About another 30 seconds passed and then the object did what no aircraft could do. It suddenly accelerated at a tremendous speed upwards and we watched it untill it disappeared from view.