Before the beginning, first discuss about aliens. Aliens are those creatures which do not belong to our world. For more than 50 years we are searching for aliens and we have found nothing. Are they ignoring us? Now a question comes to our mind. Can we contact aliens? The answer is: most probably NO. But why? Because first we have to find that type of planets (or natural satellites) which can support life. This is not an easy task. Also, a planet which can support life is not enough. Why? Because life can exist in various forms. One form is unicellular organisms. For example, in our solar system it is believed that Titan (Saturn's moon) can support unicellular life. But the disadvantage is we cannot contact them by our communication methods. But yes, there is a high possibility in future that a rover mission can take some samples of the unicellular or may be small multicellular organisms and send the data to Earth. Now comes the interesting part. If a planet is supporti...
“advguruji” is an educational website that will help the Lovely students in their studies, especially in Mathematics and Science.