Quote:
Originally Posted by Joshua G
i read debates about this all the time. Hawking says we must leave this planet within 1000 years or we will be extinct.
but why does anyone think people can live outside earth? cause star trek says so?
fact is, many things are required on earth for us to live. The planet must be in the habitable zone. there must be abundant water. there must be a specific mixture of gases in the air, including oxygen. the earth must be tilted so there are seasons. there must be a magnetic field to protect us from cosmic rays. there must be ozone to protect us from UV rays. there must be a moon to provide a stable earth orbit around the sun. there must be a stable climate over thousands of years, no ice planets, supervolcanos or asteroids. we need to live with an air pressure of 14psi, & we need gravity. Need fertile soil to grow plants, & abundant land for both the plants & animals we eat.
the next closest planets are venus & mars. they are too hot, & too cold. no atmospheres. the next star is 24 trillion miles away. it takes a decade just to launch a robot to photograph Pluto, only 3 billion miles away. any human population traveling outside the solar system will reproduce into something not human in a gravity free environment.
we can barely get 3 people to live 6 months in an enclosed tube only miles outside earth orbit. How is the whole human race going to live without earth? & who would want to live inside a tube, with no gravity, no outdoors, for all their lives?
pipe dream.  |
why would we move to another planet?...makes no sense to keep our physical bodies and be limited by heat and weather ect...an advanced society can project a perfect "hollodeck"...upload the mind on to a chip or the brain in to a jar and we could all exist on a giant space ship...
it would make more sense to live in a virtual world in a small confined environment than to actually move to other planets and face the challenges there...
if you can not tell the difference, then it is the same...
here is some food for thought...
how do you know we are not already uploaded to some matrix? not by some grand architect but by ourselves...the most logical conclusion would be than an advanced society ceased to exist in flesh and blood form but opted for something more convenient...
like sim city...only 1000 years in the future where you can actually upload your thoughts in to the simulation...
you could have a virtual child and not be able to tell the difference...
making complicated space ships to bend time and support fragile human life is not the way I thin it will go...
we could be on our way to another planet right now! a whole planet put on a chip, travelling for the last 2000 years, when we arrive to the planet, our technology will replicate our bodies for us and terraform the planet to our needs...until then we travel space on auto pilot, in a dream where you simply continue your life in complete oblivion...
this is a more logical scenario for long distance space travel IMO