Nova: Time travel - Through Time - HD PBS Space Documentary
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Nova: Time travel - Through Time - HD PBS Space Documentary What is time? Is time travel possible? For centuries, these questions have intrigued mystics, philosophers, and scientists, and the subject of time has been central to the world's many diverse religions and cultures. Here, futurist Clifford Pickover looks at the history of the baffling concept of time and explains why we shouldn't discount the possibility of traveling through it. Time travel is possible Today, we know that time travel need not be confined to myths, science fiction, Hollywood movies, or even speculation by theoretical physicists. Time travel is possible. For example, an object traveling at high speeds ages more slowly than a stationary object. This means that if you were to travel into outer space and return, moving close to light speed, you could travel thousands of years into the Earth's future. Newton's most important contribution to science was his mathematical definition of how motion changes with time. He showed that the force causing apples to fall is the same force that drives planetary motions and produces tides. However, Newton was puzzled by the fact that gravity seemed to operate instantaneously at a distance. He admitted he could only describe it without understanding how it worked. Not until Einstein's general theory of relativity was gravity changed from a "force" to the movement of matter along the shortest space in a curved spacetime. The Sun bends spacetime, and spacetime tells planets how to move. For Newton, both space and time were absolute. Space was a fixed, infinite, unmoving metric against which absolute motions could be measured. Newton also believed the universe was pervaded by a single absolute time that could be symbolized by an imaginary clock off somewhere in space. Einstein changed all this with his relativity theories, and once wrote, "Newton, forgive me."
Comments
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Fantastic video, really enjoyed it!
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"sands of time" literally
as you mistakenly say "GRAVITY" is responsible for time.
GRAVITY is a product of FIELD energy compressing the AETHER in an area
you people are all fking wrong, ALL RETARDED. -
Alas! Science is simply an excuse for an absolute waste of money, resources, energy, and intuition.... Most scientists let's not forget are henchmen for military and commercial interests... If only they could go for a long walk in the woods, pick some psylocibin mushrooms and ingest them... But no, apparently Nature up close and personal is too mundane.... Give me some light years, some distant galaxies, some black holes instead... Do not be fooled by the admiration of distance, and by the promise of the exotic. Look inside for answers, and for galaxies....
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The God said to the prophet of God that "Time is me" so please realize it and stop judging false predictions about the Time. Based on this, I think that the time is a medium of God in which the God monitors and controls his creatures. We cannot understand beyond the limits set by the one who created and programmed us. It is clearly and authentically said in the scriptures of Islam. "Time is me" "Ana Al-Dahr" Ana=me and Al-Dahr=time
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NOVA TV PROGRAM, EVER SINCE I REMEMBER AS A YOUTH IS THE BEST SHIT EVER AND ALWAYS HAS BEEN … BEST EVER!!!!!!!
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So, are they saying Black Matter, matters?
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Nice try but things dont work this way,,,, one of the head atheist not going to say his name ,, put forth a theory to explain away God said you can get something from nothing,,, in this video they said scientist say this ,,, True science is understanding how God does things,,, once you start to understand that ,,, everything falls into place,,, if you remove God from anything,,, you can no longer make sense of things,,, but it is entraining watching you try
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Very interesting - apart from the autistic fantasy story at the end. Started to resemble the bullsh*t "Lego Lectures" I used to have to endure from my autistic step-son years ago.
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the universe is a black hole
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(chuckles) I love all you internet-physicists below, shit tumbling out yo mouth as you spout absolute NONSENSE. Why do y'all insist on speaking on something you know nothing about? Not even a fcking bachelors degree in any relative field and yet...lots of shit chunks coming out your spouts.
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witch one is faster,,speed of light or speed of sight?..
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All that prevents time travel is the way we measure time. You can count in finite blocks such as minutes and seconds, or you can count it in "ticks", with one tick being the time period for one situation to change to another one, and that tick could be any length when expressed in finite standard time.
Music notation works in terms of these "ticks", with each note length defined relative to other notes as opposed to seconds, which means any piece of music can be played forward or backward at any speed.
It's possible that time travel is a matter of mental training to be able to perceive time within a model that allows it.
I'd guess most people have had on occasions dreams of the future which have turned out to be true.
There's also the issue of a universe existing as a mathematical fractal. If you know the formula for a fractal and the point within that fractal, you can read the list forward or read the list backwards. There's also contained there the possibility that random doesn't genuinely exist, and if random doesn't exist there must be a list, and the list can again be read forwards or backwards, thus allowing vision both backward and forward in time. -
some news on this all, they found ten times more matter then previously thought and the universe is not accelerating faster and faster , its at a constant rate....
most of these videos are becoming very dated -
are they aiming at children as their audience?
can't watch this condescending staff -
Again the same shit video that is all over YT :-((
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The measurement of light is not always the same, when light goes through a cold enough substance it slows down.
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It's as if the information is orbiting the black hole
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time travel, these people will not tell you how far away the sun/moon are from earth,use trigonometry/geometry and measure the distance from the earth to these bodies,apparently,Tyson is telling us that the earth is a pear shape, what have we been looking at then? all these so called pictures from space are all CGI, I will pay for every picture from space that is real,they are all CGI,have a look at the space shuttle crew that crashed into the sea, 6 of them are alive and doing very well thank you. so one of you must have 1, we have been conned.
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who wants to see a black hole
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I remember one time my father asked me what is space he wanted one answer I was saying this in my brain
What is space It's every thing and nothing it's full and empty it's dark and light no gravity and one of the strongest gravity how can space hold hundreds and thousands of black holes if it has no gravity and how can we make endless moves if there is gravity
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