The Royal Society recently held a conference to mark 50 years of searching for extra terrestrial intelligence. One of the questions that we all ask ourselves from time to time is whether we are alone in the universe or whether life exists on other planets.
Recently, however, voices in the scientific world have been warning that it might not actually be wise to search for life on other planets. They argue that as the Universe is about 14 billion years old and the Earth is about 4.5 billion years old then if there were life on other planets they are likely to be far more advanced than we are. If that was the case and they happened to find us because of signals we have sent out then it is possible they may not be as friendly as we had hoped. Therefore, some scientists say that we should keep quiet just in case !
They raise an interesting point but I have to say that I would have thought that Earth would have received some sort of electronic signals by now if there was advanced life somewhere out there. So far, there has not been any sort of signs that life may exist elsewhere.
I happen to think, though, that us humans are unique and that life on Earth was caused by a unique accident so rare that it was a one off. In other words, I think that we are alone and it is us that will one day inhabit other worlds when our own has run out of resources.
I have to say that I have, of course, no evidence whatsoever to back up my opinions, apart from the fact that I haven’t seen any sign of any alien spaceships myself yet !
I have always wondered, like everybody else, whether alien life forms exist. Are we alone in the universe or is there other intelligent life out there is a question that has been asked many times and, no doubt, will be continued to be asked for many centuries to come.
New research by an Edinburgh scientist has come up with a new estimate as to how many other intelligent life forms there may be in our galaxy. The scientist simulated alien worlds and then applied various scenarios and deduced that there must be anything between 361 and 38,000 intelligent civilisations in our galaxy ! It amuses me when scientists attempt to estimate the probability of alien worlds. It is a very difficult job because there is little or no evidence. Many people have claimed that they have seen UFO’s but I suspect that there are other explanations for these sightings. If UFO’s frequently visit our planet why is it that they have not made contact with us ?
I would love to think that there are other planets out there with life on them but until I see evidence my belief is that we are alone in the universe. I think that by some freak of nature human beings were formed and that this event was completly unique. Our destiny is to populate the rest of the galaxy and until we do no other intelligent living beings exist on other planets.
I think that we will never find out whether there is life on other planets. The distances between planets is huge. Even if you were able to travel at the speed of light it would take hundreds if not thousands of years to reach other planets where there possibly could be life.
Whist I find research on this subject fascinating and I love watching films and TV programmes about it, I think it is a question that will continue to haunt us for ever. In any event we need to worry about our own survival rather than anything else. Nature has a nasty habit of extinguishing life when it feels the planet is threatened so we may not be around long enough to find out whether we are alone in the universe or not. Sorry, I am not a doom and gloom person, but I can see where this is heading !