Are we alone in this universe

Are we alone in this universe? Does life exist in other planets? These are the kind of questions that are yet to be answered. Within the last 100 years scientists have shown remarkable advancement in space science. Millions of dollars are gone and a lot of time has been spent to answer the above questions. Space telescopes have brought us pictures of unknown planets that might have some indication of life like that of the Earth. …

…and there exists intelligent life form as here. We have created the Arecibo Radio Telescope that reaches over a distance of 100,000 light year. If there are any intelligent life form out there within the range of Arecibo Radio Telescope we would definitely be able to figure that out some time in future. Our technology has developed quite a bit. But we need more time and technological advancement to answer questions of life on other planets.