Space Signs

The crop circles.
Crop circles are the main things to be search about in this world of modern technology and 21st  century. These things were the major items for study and investigations in last few decade or in 90s during the world wars. Crop circles always  were the mystical art. That is mainly drawn or did in the crop fields around the world mainly in Europe and American continents. According to the scientific study there are no signs and clues about them that they made by humans or any of living beings present in the planet  earth.  there are only a few studies about crop circles that's why they are still remain unsolved mystery and kind of enigma thing. By some  scientists these crop circles around the world mainly seen in the summers and are related to space because all the crop circles got every design inspired by the space or part of it the nature and the universe itself. So the studies shows that this is the work of very high  intelligence (E.T) or by modern high tech  machines.
But in my personal view i bet this is the work of extra  terrestrial aka Aliens. Because they are showing us that we are not only the centre of the universe. There are lot of highly intelligence breed around us in this eternal infinite universe. They show us these things for that because they have to realise that we are made up of nature and universe. And we are destroying our lovely planet by ourselves. May be these all can be  the signs of the warn that Humans you still have time to apologise for mother earth and this universe too.