Exploring Space

People start to go hundred years ago in space and search life there in other planets. But no one discover that we want, scientists try best. One day they will success and that my wish. Beyond the earth there may be extraterrestrial like alien and so on. That's scientists thinks. Now days scientists start to debate on moon there may possibly our life. In our universe only earth is habitable planet. It have all the natural facilities like oxygen, carbon dioxide, water, etc. In future scientists might find another planet like our earth?. It is possible? Scientists debate other planets that's good, while searching life someone life finished and time waste so, there is also positive and negative impact. positive impact like we gain knowledge of specific, and other planets. Negative impact like some one may died while searching space.