I pulsating light descending over the water in Botswana on the Okavango DeltaI don't know what I saw. I was standing on the deck of my tent that was inside the Okavango Delta in Botswana. I was admiring the night sky when I saw what I thought was a star but it began to move from the right going left. It moved slowly and started to pulsate. It was a white light that was oval in shape and it intermittently pulsated. It continued to move left and began to descend. There is nothing out where I was. The Delta is wetlands with animal life. There is nothing flying at night and there are no night boats.There was no sound just sheer silence. I was trying to figure out what this object could be as it continued to descend toward the water. It suddenly vanished and I thought it was gone until seconds later I saw a strong, bright, pulsating light stationery over the water. It stayed that way for several minutes. It continued to be still and pulsate. I finally left the deck and went back inside my tent. I was disturbed by this but could not tell you why.I did not think to take a video of this as I kept trying to figure out what it could be. As I went back inside it was still intermittently pulsating. Without the pulsation you could not otherwise see anything.I am not a nut case and this has never happened to me before. I have been reticent to even mention this but thought I should.I simply want to know what it could have been since there is no aircraft in this area except bush planes that fly only during the day. There are no known lights in the area.