Sunday, March 1, 2015
To survive we must leave earth...
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As the way earth is going we are directing ourselves and our planet to extinction. As now a days we
have the global warming really quickly, we all have seen it and eventually the sun will accelerate global warming to a point where all of Earth's water will simply evaporate. In a billion years from now the Earth will be a very hot, dry and uninhabitable place. We have extreme climate changes that leave everyone with the mouth wide open all year long. The world population is expanding at exponential rate what leads us to diminishing natural resources vital to our survival and no one is doing anything to replace them with sustainable alternatives or try to grow our natural resources. Even if the humans manages not to push itself to the a nuclear war and extinction, there are thesis telling us that our aging sun will expand and swallow the planet in roughly 7.6 billion years.
Stephen Hawking said in an interview with Big Think "I believe that the long-term future of the human race must be in space. It will be difficult enough to avoid disaster on planet Earth in the next hundred years, let alone the next thousand, or million. The human race shouldn't have all its eggs in one basket, or on one planet. Let's hope we can avoid dropping the basket until we have spread the load."
Hawking says he is an optimist, but as in the recent past, humankind's survival has been nothing short of "a question of touch and go" he says, citing the Cuban Missile Crisis in 1963 as one example of how we narrowly escaped extinction. According to the Federation of American Scientists there are still about 22,600 stockpiled nuclear weapons scattered around the planet, 7,770 of which are still operational. Because of this the threat of a nuclear holocaust has not subsided. Probably the frequency of nuclear weapon use in the future will increase, because every country that has power will be fighting for the resources that they let die in the first place. The nuclear weapon threat and even use will be our everyday bread. Every country wants power, resources and want to live, which will be really difficult with everything that is adding up to this time ticking bomb that we let our planet become. We just hope that the negotiations are taken with care and judgment or the years remaining on our planet are going to be less that we think now.
Hawking also said that between next thousand years it will take man to make the planet uninhabitable and the billion years it will take for the sun to turn our planet into an arid wasteland, there is always the chance in the middle that a nearby supernova, an asteroid, a black hole could do us in.
So the future is not so bright for our planet between global warming, contamination, increased population, nuclear weapons, natural resources reduction and every human being not caring for what really matters instead of oil, money and power. We must do something now, because sadly finding another habitable planet to live in is far from reality. Just saying that the nearest star Proxima Centauri is 4.2 light years away, so to travel to it we have to be flying at the speed of light for 4.2 years. Obliously we are far from light travel for 4.2 years with a craft full of humans. If we travel in chemical fuel rockets we have use the trip would take about 50,000 years, so no humans will survive this journey. Sadly we are in the path to extintion faster than we ever think of...
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