It's crazy to think that in our galaxy if there are aliens with good enough technology
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Money Be Green
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The fastest thing in the universe is light. But light has a speed limit. It is not instant. This becomes a problem when you are dealing with vast distances.Idk if its me or coli brehs tripping but can someone explain the idea of telescopes seeing into the past because of distance
Think of a Ferrari being a really really really fast car. You can instantly go from one side of the block to the other side of the block in a Ferrari going 200mph. But what about a trip to Vegas from NYC in that same ferrari? Is it instant? No. It will take an incredibly long time for that Ferrari to go to vegas despite it being a super fast object. Light works the same way. Except it's measured in light-years(the distance light travels in a year) instead of mph
For example the light from the sun that hits your face in the morning is actually 7 min old, because at the speed of light it took 7min for a particle of light to cross the distance from the sun to us.
This gets really trippy once you consider that "vision" as a concept is us processing the reflection of light off of our eyes from other objects around us. So in order to see something, light must travel to your eyeball first. And you only "see" the object as it was when the light bounced off of it. So this can get problematic with far objects like galaxies or blackholes or even just our sun. We can only perceive them at the moment that light left them.
So there is a lag. So if the light from an object 100,000 light years takes 100,000 years to get here, then we can only perceive that object as it was when the light first left it. Thus if you were looking at the earth at a distance of 100,000 lightyear away, you would be seeing cavemen and sht because of the lag.
Sorry for the long post breh. Wanted to cover everything for you.
How so?
I don't get why you put the emoji....
Our human minds just sees things a certain way. That makes sense ..
One being a sense of time. Past, present and future.
Hours, minutes, seconds etc....
We created units of measurements to help us quantify that feeling of "time"...
When you wake up from REM sleep... And you didn't see a clock.. would you know around what time it is.
There's times you wake up you don't know if it's 5 in the afternoon or 5 In the morning.
Some people even say that everything that has ever happen or ever will happen...is happening right now
I ALWAYS CHUCKLE WHEN WE TRY TO EXPLAIN ADVANCED CIVILIZATIONS USING OUR METRICS. RARELY SEE ANYBODY CONSIDER THE POSSIBILITY THAT OUR NUMBERS/LIMITS MIGHT NOT APPLY TO THEM.
The Prince of All Saiyans
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Silver Surfer
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So if it makes sense, what are you talking about.
Deriving a system that's used as a utility as well as general part of life.
Who are you say it doesn't exist?
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There are no (intelligent) aliens.
We are alone in the Universe.....
I'm cool with that.
We are alone in the Universe.....
I'm cool with that.
I think u just wanted to respond without actually thinking about what you were writing.
You're saying just cause it makes sense to our human minds, and it helps us.. then that means its real.
No ...it just means it's a tool that we use because of how we innately think as humans.
It's like using Santa clause or the stork that brings babies to explain shyt.
We know how kids minds work so we use things to explain shyt to then or to keep them in line.
But who am I to say it's not real.
Who da fukk are you to say it is real.
Many people throughout history have theorized that time is an illusion.
I ain't just make this up out of the fukking sky
Silver Surfer
Veteran
Did you just compare Santa Clause to the notion of time?
What is wrong with you.
How would you measure the duration the earth travels in its orbit around the sun?
Hater Eraser
Veteran
How so?
The illusion of time
Andrew Jaffe probes Carlo Rovelli’s study arguing that physics deconstructs our sense of time.
Illustration by Stephan Schmitz
The Order of Time Carlo Rovelli Allen Lane (2018)
According to theoretical physicist Carlo Rovelli, time is an illusion: our naive perception of its flow doesn’t correspond to physical reality. Indeed, as Rovelli argues in The Order of Time, much more is illusory, including Isaac Newton’s picture of a universally ticking clock. Even Albert Einstein’s relativistic space-time — an elastic manifold that contorts so that local times differ depending on one’s relative speed or proximity to a mass — is just an effective simplification.
So what does Rovelli think is really going on? He posits that reality is just a complex network of events onto which we project sequences of past, present and future. The whole Universe obeys the laws of quantum mechanics and thermodynamics, out of which time emerges.
Rovelli is one of the creators and champions of loop quantum gravity theory, one of several ongoing attempts to marry quantum mechanics with general relativity. In contrast to the better-known string theory, loop quantum gravity does not attempt to be a ‘theory of everything’ out of which we can generate all of particle physics and gravitation. Nevertheless, its agenda of joining up these two fundamentally differing laws is incredibly ambitious.
Alongside and inspired by his work in quantum gravity, Rovelli puts forward the idea of ‘physics without time’. This stems from the fact that some equations of quantum gravity (such as the Wheeler–DeWitt equation, which assigns quantum states to the Universe) can be written without any reference to time at all.
As Rovelli explains, the apparent existence of time — in our perceptions and in physical descriptions, written in the mathematical languages of Newton, Einstein and Erwin Schrödinger — comes not from knowledge, but from ignorance. ‘Forward in time’ is the direction in which entropy increases, and in which we gain information.
The book is split into three parts. In the first, “The Crumbling of Time”, Rovelli attempts to show how established physics theories deconstruct our common-sense ideas. Einstein showed us that time is just a fourth dimension and that there is nothing special about ‘now’; even ‘past’ and ‘future’ are not always well defined. The malleability of space and time mean that two events occurring far apart might even happen in one order when viewed by one observer, and in the opposite order when viewed by another.
Rovelli gives good descriptions of the classical physics of Newton and Ludwig Boltzmann, and of modern physics through the lenses of Einstein and quantum mechanics. There are parallels with thermodynamics and Bayesian probability theory, which both rely on the concept of entropy, and might therefore be used to argue that the flow of time is a subjective feature of the Universe, not an objective part of the physical description.
But I quibble with the details of some of Rovelli’s pronouncements. For example, it is far from certain that space-time is quantized, in the sense of space and time being packaged in minimal lengths or periods (the Planck length or time). Rather, our understanding peters out at those very small intervals for which we need both quantum mechanics and relativity to explain things.
In part two, “The World without Time”, Rovelli puts forward the idea that events (just a word for a given time and location at which something might happen), rather than particles or fields, are the basic constituents of the world. The task of physics is to describe the relationships between those events: as Rovelli notes, “A storm is not a thing, it’s a collection of occurrences.” At our level, each of those events looks like the interaction of particles at a particular position and time; but time and space themselves really only manifest out of their interactions and the web of causality between them.
In the final section, “The Sources of Time”, Rovelli reconstructs how our illusions have arisen, from aspects of thermodynamics and quantum mechanics. He argues that our perception of time’s flow depends entirely on our inability to see the world in all its detail. Quantum uncertainty means we cannot know the positions and speeds of all the particles in the Universe. If we could, there would be no entropy, and no unravelling of time. Rovelli originated this ‘thermal time hypothesis’ with French mathematician Alain Connes.
The Order of Time is a compact and elegant book. Each chapter starts with an apt ode from classical Latin poet Horace — I particularly liked “Don’t attempt abstruse calculations”. And the writing, translated from Italian by Erica Segre and Simon Carnell, is more stylish than that in most physics books. Rovelli ably brings in the thoughts of philosophers Martin Heidegger and Edmund Husserl, sociologist Émile Durkheim and psychologist William James, along with physicist-favourite philosophers such as Hilary Putnam and Willard Van Orman Quine. Occasionally, the writing strays into floweriness. For instance, Rovelli describes his final section as “a fiery magma of ideas, sometimes illuminating, sometimes confusing”.
Ultimately, I’m not sure I buy Rovelli’s ideas, about either loop quantum gravity or the thermal time hypothesis. And this book alone would not give a lay reader enough information to render judgement. The Order of Time does, however, raise and explore big issues that are very much alive in modern physics, and are closely related to the way in which we limited beings observe and participate in the world.
Bro...I was making an analogy about how we also simplify things for kids, so they can understand things... And it makes sense to them.
Maybe like our brains do for us when it comes to time
And the question you asked...
How the hell would I know.... Im a human just like you.
A higher intelligence looking at us like we're fukking retarded because we believe in linear time.
Just like a big brother looks at his little brother who believes in Santa
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Silver Surfer
Veteran
Why would a higher intelligence look at us like we are retarded for having a time construct?
The reason we know the duration of the orbit is because of mathematics..
.Do you know what the speed of light is?
