Technique that can be developed to detect UFOs

The instrument should not ony be capable upto lower rf range but also capable for detecting lowest and highest frequency that is existed in space.Any possibilities should be found that ray can be from dark matter which is spreaded in space so this type of ray will not feel any boundry in space as the other radio waves find.With this type of ray alien can appear any where on earth and we can not detect them with our instruments that are made to detect rf waves.

Development of life without water and oxygen

Signs of finding water on moons of saturn and on mars shows that probability of finding life in the form of microbes and vieruses is more and probability of finding life in the form of development of cell is less till yet.There should be more needed than water for the life to be developed as a creature.
The second thing is that life can also exist without water ,I think there should exist certain physical conditions besides choise of any chemical material for developing of life.Such as certain amount of heat ,pressure or atomic forces exist in molecule of a compound that give rise to life or movement in molecular structure of a compound .And this fact is also important that automatic motion of chemical compounds (e.g. making of chlorophil on earth due the the effect of sun light,or constructing a cell ) or smallest thing in a cell is due to physical phenomena that may be the reason of rise of life on any planet.
The third thing is that important is that it is not important that we find life on any planet ,it is important that how the life is developed itself.
Solar system is a very small thing that is important to study for the study of universe.As our sun there are many and other also have their solar syatem so our solar system can be think like that study of basic element of the universe.