They are in the nature of supernatural (angel..jinn..spirit and evil) is saying they are aliens or UFO. It was not me who says so. If there is among the wise make theories about aliens or UFO then is WRONG. As we humans were created by All Wiser God do know that there are unseen natural life which shared the same together in this world which we named them angels and jinn. Not aliens or UFOs. But they are also one of the Mighty Creator God that if we do not forbid or advice each others will cause destruction of human kind. This is as stated in surah AlKahfi: 97-99 with meaning :
"So they [Ya'juj and Ma'juj (Gog and Magog)] could not scale it or dig through it. (Dhul-Qarnain) said: "This is a mercy from my Lord, but when the Promise of my Lord comes, He shall level it down to the ground. And the Promise of my Lord is ever true. And on that Day [i.e. the Day Ya'juj and Ma'juj (Gog and Magog) will come out], We shall leave them to surge like waves on one another; and the Trumpet will be blown, and We shall collect them (the creatures) all together. - refer footnote (1)
So, we knows that some of us that crazy to gains "power" in order to control this universe which forget that they are dealing with evil's works. Seems look like they are doing some research for good but they are creating a monsters (the destruction of human kind-gog and magog). They are destroying the wall actually. Only All Wiser and All Mighty can help us.
Footnote:
(1) As regards the time of Allah's promise, it has two meanings: (1) It may mean the time of the destruction of the wall (caused of our mistake) which "We shall leave them to surge like waves on one another" and (2) it may also mean the time of the death and destruction of everything destined by Allah at the end of the world i.e., the Hour of Resurrection.
Dhul Qarnain? A ruler about whose glory you have heard from the people of the Book, was not merely a conqueror, but also a believer of the doctrines of Tauhid (believer) and the life after-death and acted upon the principles of justice and generosity. He was not a mean person like you who have been puffed up by the possession of petty estates, and give yourselves airs of superiority. Some of us known him as a Hercules.
