LIFE IN THE UNIVERSE

To our present knowledge, life is available only on Earth. The planet earth along with its atmosphere and oceans and climate provide great facilities for the creation of life. The aspect whether there is life anywhere in the universe is under consideration by astronomers and scientists.
Earth is a planet in the solar system and revolves around the Sun, which is only an average star. There are billions of stars in the universe, some are bigger and more aged than the sun. Some of these stars have planets circling them. AT least some of them might be having similar conditions as on earth which support emergence of life. The universe contains about 100,000 million galaxies and many of them contain about 100,000 million stars. But it is difficult to examine the availability of life on such planets, with limited scope from earth. Such planets are several thousand light years from earth. ( one light year is the distance travelled by light in one year at the rate of 300,000 kilometers per second). As such it is at present impossible for us to examine the possibility of life in other places, even if life exists in other places in the universe. If life exists in planets having superior life period, they should be definitely superior beings than us.
Astronomers and scientists are for years busily engaged in the search for extra terrestrial intelligence (SETI) since 1960. Atrophysisists and radio astronomers are trying to intercept signals from extra terrestrial beings using powerful radio telescopes. Some believe that they have come into contact with aliens. They say that these extra galactic creatures are already among us, and we are unable to prove the same due to our limited understanding and resources.
There are several appearances of unidentified flying objects (UFOs) since a long time. There are even instances that even aeroplanes also followed to investigate them, but they could not match their speed. There are also reports from several human beings that they were taken into the UFOs and they were tested and then left back on earth. Even lie detector tests were performed on such reporters and the results were positive. Some assume that these flying sausers carry extra terrestrial aliens who are far superior to us in technoligy. Only we have to wait and see with some hope of extra terrestrial beings to come into contact with us in the near future, with our developement in technology.