BIG BALL OF LIGHT DISAPPEARED INTO THE SKY IN FRONT OF ME AND MY SISTERAround 21:00, the sky is clear, there was not a cloud in the sky. I was walking my dog on a plot near my house. I live a few miles from Orlando International Airport, hence I see a lot of planes taking- off, landing and taxiing mainly. A ball of light was sighted flying at a considerably lower altitude (above me) and had no aerial taxiway lights (since it was at altitude for landing). At the same time I called my sister and asked her to leave the house to see also.. At that time I was running back home with my dog along to see my sister, since I needed another witness (was not the first ball of light that I see here in Orlando-Fl.) Are looking at the ball together and the ball of light was flying at a constant speed and then the more strange happens, it begins to rise slowly.. We were able to see the ball of light getting farther up the point we saw the light gradually decrease until disappearing in the sky (remember that was not a cloud in the sky) at the end of it, I was super excited to have been able to show someone more, and happier still to have been my sister (she's 21 ) I'm lover of planes, helicopters, RC’s planes/Helicopters and virtually everything that flies from when I was a child, so I know exactly what I saw was not any type of aircraft. I thank everyone who took the time to read and also saw someone please write here also.