外星人和人类的太空探索1.ppt

法学院法学院 万潋万潋.UFOWe all know that we live in a complex world,.Although the technics of the human beings are developing all the time,we still got so many unsolved problems.Among all of this puzzles,UFO is one of the most noticable things.Now as everybody knows,UFO is what we call Unknown Flying Object for short.For a period of time,once we mentioned UFO,we always communicate it with high-tech,extra-terrestrials,outter space culture and many other exciting things.There are a lot of witnesses around the world,affirming that they chanced to have seen some strange things in the sky.lets have a look.Lets see some statisticsAccording to the latest scientific research,there are about 1 million planets may have extraterrestrial life in the Milky Way galaxy .But life is made up of water，oxygen and various chemical element form.So only 250 planets can achieve those conditions.If they are evenly distributed in the Milky Way galaxy,the nearest from us is also 4600 light-years.But dont lose heart,there are about 10 billion galaxies like the Milky Way galaxy in the whole universe.The Quest for Extraterrestrial Through all of our history we have pondered the stars and muse whether humanity is unique or if somewhere else in the dark of the night sky,there are other beings who contemplate and wonder as we do.Somewhere else there might be very exotic biologies and technologies and societies.We are a little lonely and we ponder the ultimate significance of our tiny but exquisite blue planet.The search for extraterrestrial intelligence is the search for a generally acceptable cosmic context for the human species.In the deepest sense,the search for extraterrestrial intelligence is a search for ourselves In the last few years-in one-millionth the lifetime of our species on this planet-we have achieved an extraordinary technological capability which enables us to seek out unimaginably distant civilizations even if they are no more advanced than we.That capability is called radio astronomy and involves single radio telescopes,collections or arrays of radio telescopes,sensitive radio detectors,advanced computers for processing received data.Radio astronomy has in the last decade opened a new window on the physical universe.It may also,if we are wise enough to make the effort,cast a profound light on the biological universe.The humans exploration Lets see take a look at the two famous detector:Voyager 1 and Phoenix .Voyager 1The Voyager 1 spacecraft is a robotic American space probe launched by NASA on September 5,1977,to study the outer Solar System and eventually interstellar space.Operating for over 33 years,the spacecraft receives routine commands and transmits data back to the Deep Space Network.It was the first probe to leave the Solar System and is the farthest human-made object from Earth.The Voyager Golden Records contain sounds and images selected to portray the diversity of life and culture on Earth,and are intended for any intelligent extraterrestrial life form,or for future humans,who may find them The record contains 55 languages which include 4 Chinese dialect(putonghua cantonese minnanhua wuyu)and the ancient QinQu water.Humanbeings is still trying to explore which promotes the development of human technology and society.Otherwise the search for extraterrestrial intelligence is a search for ourselves I hope one day we can find the extraterrestrials and live harmony with them.