Strange lights seen off a cruise ship in the Caribbean.I was on a cruise in the Caribbean from July 26th to August 2nd and had met up with some people. We had left Cozumel Mexico on Thursday July 31st and wereon our way back to Miami. Me and a few friend had just came out onto the front of the ship and were looking at stars. Me and 2 others noticed a light that seemed to be a ship out at sea (a considerable distance away) but the light wasn't consistant. One second you would be able to see it and then it would go out, and wouldn't reappear for 3 or 4 seconds. The times varied. We were then looking up at the stars again and all saw one huge light come across the entire sky (towards the south) and it seemed to be a shooting star or comet, but the tail following it seemed to be just part of the initial light streaking through the sky, and did not last for more than a quarter of a second. 3 or 4 of us saw it and all yelled "woa". The last thing only I saw, and was kind of akward. I was trying to scope out the planets that were visible, and the only one i was sure about was Mars (being huge and very bright at the time). I was staring towards the north at what looked like a planet that was shifting colours from blue and red. For 10 seconds the "star" was shimmering an inconsistant red colour, and then the next 10 seconds and inconsistant blue colour. The colours were always visible and did not blink, but got brighter and darker some times. It seemed to be very far away. I was staring at it afterwards thinking of what planet it could be, then looked one of my friends for 3 seconds. I turned my head back to the "star" and it seemed to be out of place in the sky in comparison to the others from what i had just been looking at, it was too far to the left. (2 inches from my view, so about this far |---------| in comparison to what i had seen). I stared at it and it sudenly dissapeared and reappeared where it had first been, back to the right.