Why Does Gravity Travel at the Speed of Light?

By Eric Betz | December 8, 2017 12:04 pm
Two neutron stars collide; the resulting gravitational wave spread at the speed of light. (Credit: National Science Foundation/LIGO/Sonoma State University/A. Simonne)

Two neutron stars collide; the resulting gravitational wave spread at the speed of light. (Credit: National Science Foundation/LIGO/Sonoma State University/A. Simonne)

The dead cores of two stars collided 130 million years ago in a galaxy somewhat far away.

The collision was so extreme that it caused a wrinkle in space-time — a gravitational wave. That gravitational wave and the light from the stellar explosion traveled together across the cosmos. They arrived at Earth simultaneously at 6:41 a.m. Eastern on August 17.

The event prompted worldwide headlines as the dawn of “multimessenger astronomy.” Astronomers had waited a generation for this moment. But it was also the first-ever direct confirmation that gravity travels at the speed of light.

The Speed of Gravity

We all know light obeys a speed limit — roughly 186,000 miles per second. Nothing travels faster. But why should gravity travel at the same speed?

That question requires a quick dive into Albert Einstein’s general relativity, or theory of gravity — the same theory that predicted gravitational waves a century ago.

Einstein overthrew Isaac Newton’s idea of “absolute time.” Newton thought time marched onward everywhere at an identical pace — regardless of how we mortals perceived it. It was unflinching. By that line of thinking, one second on Earth is one second near a black hole (which he didn’t know existed).

Newton also thought gravity acted instantaneously. Distance didn’t matter.

It’s All Relative

But then Einstein showed that time is relative. It changes with speed and in the presence of gravity. One of the ramifications of that is that you can’t have simultaneous actions at a distance. So information of any kind has a finite speed, whether it’s a photon — the light-carrying particle — or a graviton, which carries the force of gravity.

“In relativity, there is a ‘speed of information’ — the maximum speed that you can send information from one point to another,” says University of Wisconsin-Milwaukee physicist Jolien Creighton, an expert on general relativity and member of the LIGO team that first spotted gravitational waves.

Creighton explains that in electromagnetism, when you shake an electron, it creates a change in the electric field that spreads out at the speed of light. Gravity works the same way. Shake a mass and the change in the gravitational field — the gravitational wave — propagates at that same speed.

“So the fact that the speed of gravitational waves is equal to the speed of electromagnetic waves is simply because they both travel at the speed of information,” Creighton says.

There’s an easy way to picture this, too. Imagine the sun vanished right now. Earth wouldn’t just drift into space instantly. After eight minutes, Earth would go dark and simultaneously push off in a straight line.

  • Ld_Elon_Postman_RoyalMale


    Light is the fires of ‘hades’, WHICH IS BLACK as coal setting alight of its own heat and combustion and where it be cold, that be hot as plasma.

    You see life on earth is = to black hole, where life/light arises and falls back into, and from the darkness of the void.

    One instantly switches polarity and thus spaces {light years across}.

    • http://www.mazepath.com/uncleal/qz4.htm Uncle Al

      “LISTEN UP, pus-for-brains! You snipe jocks WILL have those zube distorter modules ratcheted by 0700 hours. Any of you vat-grown industrial rejects miscalibrates a D*, your chromosomes gonna be strung across reactor containment!”

      Youtube v=Ac7G7xOG2Ag

    • Oliver Sol

      I won’t pretend to understand what you’re talking about or referencing, but, if I’ve inferred correctly, it seems that last bit is challenging the statement that information can not travel faster than light due to the entanglement properties in quantum mechanics.
      Does not the no-communication theorem of quantum mechanics say that the results of quantum entanglement do not constitute information exchange?

  • Ld_Elon_Postman_RoyalMale

    Stargate likely represents,~ colour chart correlation syncs, yin yang, represents polaric teleportations, too. Black and white represents the two pure states [Of colour]. polarity duplex.

    • http://www.mazepath.com/uncleal/qz4.htm Uncle Al

      Comments: 1043
      Upvotes: 92

  • Noah Ibrahim

    Isn’t a graviton a hypothetical particle? You should have stated it “in theory”.

    • Ld_Elon_Postman_RoyalMale

      Interesting, especially as one thunk plasma has a bend and thus light has a mass {force} enough for its ‘gravity’ to pull it in on itself and create the {bonded} plasma ‘geometric’ curvature,.

      • http://www.mazepath.com/uncleal/qz4.htm Uncle Al

        Behold a null comment about a null geodesic path.

  • Matthew Crochet

    What? This is not a complete argument. The ‘speed of information’ or ‘speed of causality’ is not WHY gravity travels at the speed of light. It simply is the maximum speed that light and gravity travel at. Usually is travels slower when observed traveling throigh a medium. Nobody has answered what makes that the speed limit, and don’t say ‘action at a distance’ is a scientific concept- it’s a scientific mystery. Not one of the industry scientists todag have an explaination of spooky action at a distance, or gravity. Good luck explaining it without first understanding what makes up light. Whoever researches these should probably do more general research- then study focused experiments and their results. This is just coloring data.

    • Joe Cogan

      We do understand what makes up light: photons, and we also understand why they travel at the speed they do.

  • http://www.mazepath.com/uncleal/qz4.htm Uncle Al

    “graviton” There is zero empirical evidence that gravitation is quantized. To 15 decimal places (MICROSCOPE), the only validated gravitation theory, general relativity, is wholly incompatible with quantum mechanics (separability versus entanglement, and no uncertainty in measurement).

    That gravitational wave and light signals from GW170817 neutron star merger arrived within 2.7 seconds (about the sun’s radius) window over a 140 million lightyear path implies spacetime is massless. Disturbances propagate at lightspeed. Dirac sea onward…oopsie!

  • http://www.mazepath.com/uncleal/qz4.htm Uncle Al

    Shake a mass” Be very careful here, gravitation versus gravitational radiation. GR demands ligthspeed is finite. Its value is observed not calculated. Group vs. phase velocities and negative refractive index in meta-materials
    …DOI:10.1103/PhysRevLett.110.013902, …DOI:10.1021/acsphotonics.7b00760).

    Dipole radiation is sourced by a changing dipole moment. (Punctiliously, the second time derivative of the dipole moment, acceleration) For a pair of charges
    …d = qr + q’r’
    There’s nothing special about the derivatives. For a pair of masses, the gravitational dipole moment and its time derivative are
    …d = mr + m’r’
    …mv + m’v’ = p + p’
    By conservation of momentum the second time derivative of the gravitational dipole moment is zero. Go to a center of momentum frame and set the first derivative to zero as well. There is no gravitational “electric dipole” radiation. Consider the analog of “magnetic dipole” radiation. The gravitational equivalent of the magnetic dipole moment for a pair of charges is
    …M = mv x r + m’v’ x r’ (“x” is the cross product, “mv” is the “mass current”)
    But M is the total angular momentum, which is also conserved. There is no gravitational “magnetic dipole” radiation.

    The next moment up is quadrupole, with no relevant conservation laws, so gravitational quadrupole radiation is permitted. Thus gravity must be a tensorial (spin-2) interaction and uniformly attractive.
    Electromagnetism is mediated by spin-1 photons and can be repulsive.

  • Dr. Manos PhD

    “In relativity, there is a ‘speed of information’ — the maximum speed that you can send information from one point to another,”
    So, what about the ‘instant’ transfer of information through Quantum entanglement, no matter the distance.?
    By counting that, there’s absolutely no maximum speed that you can send information from one point to another. There are no limits in relativity.

    • Oliver Sol

      The No-communication Theorem states that classical bits of information can not be transmitted thru quantum entanglement. I can’t say I understand the principle completely, only that there is an answer to your challenge that states there is no transfer of information thru entanglement, & that the information speed limit holds up due to this.
      Honestly, in my very limited picture of quantum entanglement, I would’ve had the same question, but apparently there’s an answer.
      If you look up the not communication theorem, you will find that answer, & perhaps you will have better luck at understanding it than I. Hope this helps!

      • Dr. Manos PhD

        That’s a very interesting theorem. It cleaned my view on the subject. Although, I believe that it’s very limited (except if I didn’t get it completely). I believe there is a way to overcome that problem, by using multi way entanglement apparatuses. For example, with binary communication, a separate apparatus for 1 and a separate for 0, = 4 total apparatuses at both ends of communication (any distance) for 0 & 1. All other variables are solvable.

        • rickdamiani

          If you can do this in a way that is repeatable, I believe you’d have a lock on the Nobel prize for Physics.

    • OWilson

      The big problem with Quantm Entanglement is that there is no way to cofirm that the “spooky action at a distance” is valid in any experiment except the reciever reporting back to the lab by the conventional (space?) telephone, using traditional EMFs at the limited speed of light!

      It’s the confirmation (comparison of the dead cat, or the left glove) that is actually “information”. :)

      • http://www.mazepath.com/uncleal/qz4.htm Uncle Al

        The Einstein-Podolsky-Rosen argument and the Bell Inequalities are realized through a satellite up-link and down-link. Entanglement works by the book with no hidden variables.

      • bumboclot

        That’s not the problem. Pretty much the only thing they have figured out about this phenomenon is that distance has no effect on the entanglement. The reason it’s spooky is that nobody has figured out why.

    • andrewp111

      There is no “speed of information” in relativity. The speed of light is the only special speed, since it describes the relation between space and time. The equations of relativity describe the behavior of things that travel slower than light (all ordinary things) and things that travel faster than light (tachyons) as well. Experimentally, no faster than light particle or communicative influence has ever been observed. However, absence of evidence is not proof of absence. There could be faster than light phenomena that we don’t know how to observe.

      • create14all

        The reason for not observing something faster than the speed of light is because light is used for the observation.

      • BG Davis

        ‘absence of evidence is not proof of absence’
        Exactly. And this is part of what is so maddening about all the endless ‘explanations’ of this ‘rule’ of maximum velocity.

  • Martolt

    An alternate theory is that what we call the independent force of gravity is actually just a subset of the all-pervasive electric force. In the Electric Universe model, it is electricity that is the driving force behind the Universe. We observe this everywhere we look – vast plasma filamentary structures feeding electric current throughout and forming metallic Hydrogen electrodes, the stars, at plasma Z-pinch points in the circuit.

    • http://www.mazepath.com/uncleal/qz4.htm Uncle Al

      Electromagnetism is dipolar and can attract or repel. Gravitation is quadrupolar and strictly attractive.

      ” metallic Hydrogen electrodes” Dark matter Zambonies.

      • http://batman-news.com LazerTalon

        If gravitation is strictly attractive, then why do so many people believe gravitational waves emanate FROM the gravitational source??

  • Erkan Ermiş

    You are wrong. According to the theory of general relativity, sudden removal of the sun creates a space-time disturbance by gravitational shock waves with infinite peak that would evaporate all celestial objects on its way.

    • http://www.mazepath.com/uncleal/qz4.htm Uncle Al

      Gravitational waves are quadrupolar disturbances. Suddenly vanishing the sun would do literal nothing. You need to instantly implode it. The resultant neutrino blast would overshadow any spacetime distortion consequences,

      37Ar 35 day half-life decays by electron capture to 37Cl, then Auger electron cascade x-ray emissions.

    • Russ Hamilton

      That is NOT the point…

  • Antifaarecommies

    If gravity travels at the speed of light does that mean we’re constantly eight minutes behind the sun. I believe in some do that gravity is almost instantaneous no matter the distance.

    • http://www.mazepath.com/uncleal/qz4.htm Uncle Al

      Gravitation propagates at lightspeed . Beleve what you want – gods to open borders. Nothing propagates faster than a massless null geodesic. Nothing “travels” during entanglement decoherence (1203 km Earth separation, 1600 km to 2400 km pathlength, arXiv:1707.01339). Hindus have 30 crores of gods; ask an American Indian about “open borders.” What looks good through a pinhole must still obtain in a ten ton load.

      • Purgedoj

        Obviously, I can’t participate in the physics side of the argument. If entanglement prevents travel, then we must be entangled throughout the universe….since there appears to be order. Since gravity is a very weak force, entanglement must be the product of electromagnetism, which is 39 ( to the 10th power) times more powerful than gravity. Therefore, gravity does not determine much of anything.

    • Russ Hamilton

      I always wondered about how you could maintain a stable orbit if gravity was not infinite or at least much speedier than light. Supposedly angular momentum cancels out or balances the fact that it does propagate only at light speed…fwiw…

  • Jon Johnson

    Do not try to explain what you do not understand, can not prove physically or demonstrate in your control.
    Show me this thing you call gravity.
    There is no gravity, only divergent/convergent magnetism.

    • ECarpenter

      You don’t seem to understand what magnetism is. And you certainly can’t show me the thing you think is magnetism.

      Gravity waves, on the other hand, have been physically measured now.

      It’s a real problem for you flat-earthers.

      • OWilson

        We don’t know “what” gravity or EM actually IS, we only know how to measure and observe some of it’s “properties”.

        The very word gravity was given for “the force that pulls”.

        Until liberal education starts producing Einsteins instead of Bill Nyes, Madam Curies, instead of Kardashians, it will remain that way! :)

  • Kurt Stocklmeir

    around 1990 I put my theory on the internet using sci physics – all forces do not have any Doppler effect all forces move at an almost infinite speed – there is not any Doppler effect for any force – how strong gravity is does not change with direction of speed – it is probably true I was the first person to say this – these are my theories – gravity waves do not have any Doppler effect gravity waves move at an almost infinite speed – if gravity waves move at the speed of light particles like photons and neutrinos would see some gravity waves with infinite energy – people can not see gravity waves – there can not be any experiments that see gravity waves – space and time around mass makes a resonator for standing waves of gravity waves – it could be true in the future people will see standing waves of gravity waves Kurt Stocklmeir

    • http://www.mazepath.com/uncleal/qz4.htm Uncle Al

      all forces move at an almost infinite speed ” ALMOST infinite? “ACK! THBBFT!” so sad

      • Russ Hamilton

        Yes lets suppose we are travelling at 1/2 the speed of infinity or 1 percent of infinity….wait, which is faster?

    • John Thompson

      One thing I find interesting is at the speed of light time stops for the thing moving at the speed of light.
      So a photon doesn’t “age”.
      But that also means the photon moves at infinite speed – from it’s own perspective.
      Because no matter what distance it covers, it covers it instantaneously from the perspective of the photon itself.
      Correct me if I’m wrong, but isn’t the definition of infinite speed the ability to go infinite distance in no time?
      Oh, yeah, that’s hurting my head just trying to conceive of it.

      • Kurt Stocklmeir

        John time is a lot space – if any particle does not have any size associated with a dimension of space the particle will have infinite energy – that is why Einstein said if a particle like an electron is moving at the speed of light the particle will have infinite energy and infinite mass – this is true for time – any particle is spread through time a lot like space – a particle can not be at 1 piece of space and a particle can not be at 1 time – if a photon does not see any time that means the photon is not spread through any time and it will have infinite energy – if a particle like an electron is moving at the speed of light because of relativity it will not see any distance a lot like it will not see any time

  • http://calystarose.tumblr.com/ cirose

    After eight minutes, Earth would go dark and simultaneously push off in a straight line. — that’s quality nightmare material. :)

  • Paul Wilson

    Ok, all true. Then we have “spooky action at a distance” a la quantum entaglement. Physicists are at pains to insist that no “information” can be instantaneously transmitted. Only quantum states. But even they admit that something spooky is going on there.

  • Alberto Carvalhal Campos

    Hold on, this is waiting to be approved by D-brief.
    The speed of gravity is really instantaneous. Newton was right. Light falls from one point to another and can take billions of years to arrive. Gravity is different. all bodies attract each other. To better understand only two bodies A and B. If A attracts B, B also attracts A. the mutual attraction from which these bodies were created (a tiny grain of matter). When they grow they already grow with greater gravity. The wine is not particle. She is a force. The graviton does not exist. It was never detected. It is hypothetical (it would be like a deity). When gravity ends in A (desitegrado), it also ends in B, because it does not matter if B has gravity if it does not have A to attract. Attraction is a mutual property. There is no solitude.
    Gravitational waves may also not exist. See details at: http://www.olhandoouniverso.blogsp...

  • nihonpro Gerard

    Ahmmm… to be honest here. Gravity travels faster then light. Its absolute speed can not be really calculated, BUT, big but, a recent discovery at CERN hints, that we are wrong about the speed of gravitational waves and that again leads us to a HUGE puzzle. It states by the first calculations and the first tests, junks of Data that gravitational waves travel at a speed of 10 000 0000 m/s. There was a huge suprise, even after recalculating and testing again, this still stands up. Soo stay up tuned, its the latest.

  • http://twitter.com/c_branderiz Carlos Branderiz

    The earth planet have a natural security protección, don’t burry gays!!!, to much tehorias arround the whorld in all lenguish..

  • Eugene McCreary

    Isn’t gravity a term for the curvature of space-time,not a force, as Newton perceived it? In that sense gravity is everywhere there is mass, all at the same time. In that sense gravity doesn’t travel or go anywhere. It just is, though the nature of the curvature changes as mass moves. Help me out here, please.

    • Francis Smith

      I have the same issue. Gravity is a word to describe a bend/curvature/distortion in space because of mass. So maybe that bend can ripple also and if the disturbance is violent enough we can measure it? I’m thinking it is like trampoline fabric that is warping around my feet all the way out to the springs, the further away the less distortion there is. But now, I am thinking it is more like the distortion on the surface of water made by a Jesus bug. When the Jesus bug is still there is a slight dimple on the surface but when it starts to move it also lets out ripples.

    • Professor Yacko

      It is a curvature of space/time, but changes in space/time happen at the speed of light. When we measure the gravitational effects of colliding black holes billions of lightyears away, we know what we’re measuring because the light reaches us when the gravity does. After billions of years of travel it’s still the same. Honestly why this is fascinates me more than most things in anything astrophysics.

    • bumboclot

      You are describing what we know about gravity going back to pre-quantum physics. Lots of theories have tried to explain gravity beyond that explanation in order to create a “theory of everything” in physics. So far none of those theories has eliminated all the competing ones.
      But like Yacko said, those gravity waves have actually been observed now, so a lot of other theories can be tossed, because they disagree with the observations. However gravity waves still doesn’t fit into a theory of everything.

  • Steve Humphries

    Does the finite speed of the photon and graviton reveal anything about the structure of the space-time medium it is traveling in?

  • Russ Hamilton

    Since time is a factor of “speed” and time is standing still at the speed of light there is no way to go beyond it…

    • http://www.throughchallenge.com David R Thomas

      That is deep. Deep space that is. Great thinking russ

  • Alberto Carvalhal Campos

    Ondas gravitacionais: O LIGO não aponta para nenhum lugar específico do céu. Qualquer choque no espaço é detectado, mesmo que seja do outro lado do planeta. Após a detecção, teremos que procurar uma fonte de luz que indique de onde veio esta explosão. A primeira fonte a aparecer seria a escolhida. Sabemos que existe explosões de raios gama no céu, a cada segundo, ou mais. Portanto está tudo errado.

  • BG Davis

    All such discussions and ‘explanations’ use circular logic or simply fail to address the central issue.

    ‘you can’t have simultaneous actions at a distance. So information of any kind has a finite speed, whether it’s a photon — the light-carrying particle — or a graviton, which carries the force of gravity.’
    Right. But this does not address the issue of what the top finite speed is, nor the issue of whether or not light is the fastest phenomenon there is.
    And in fact, according to recent Princeton experiments (and others) it is possible to exceed the previous “limit” of light speed.

  • rsabharw

    This doesn’t make sense. Gravity waves should travel at the velocity of the bodies which are creating them. They are ripples in the fabric of spacetime. And, just like a boat makes ripples in the water, they should travel proportionally to the speed of the bodies moving through space.

  • Steve Schaefer

    There is a simple explanation for what we perceive as the maximum speed of light, gravity, etc.. That is that we are vibrating into and out of existence at a fixed frequency. Since the frequency of existence (E) is fixed, we measure the maximum distance of travel between E-Points as ”The Speed Of Light”. The Cosmic Microwave Background Radiation discovered by Bell Lab Scientists might give a clue to E’s Frequency; as the principle or harmonic we live in. Therefore, Space-Time is actually only our perception of what we call the universe.

    • John Mclaren

      How did Bell scientists verify the radiation they measured was not something reflected from the sun by the cloud of the solar wind?

    • Patrick Durst

      That’s not a simple explanation. That has implications as deep as it gets, and would require some amazingly complex math/science to backup/explain. Also, you made some BOLD statements that elude to you thinking that that idea is the correct idea, or that these ideas have been proven. It might just be me, but the explanations for how things work in our universe have become nearly as insane as the religious viewpoints.

      • Steve Schaefer

        Yes, it is a bold prediction. But Spooky Action at a Distance, Double-Split Results, and Quantum Probabilities point to some stroboscopic influence that is responsible for observed outcomes. If you have ever played with adjustable strobe lights, you have witnessed fan blades slowing, stopping, and reversing direction. As scientists look at smaller and smaller scales of matter and time conventional physical laws fail. But there are some clues to support Vibrational Existence (VE). The CBR hum supposedly echoing from the Big Bang, could also be an artifact of VE. Black Holes could represent the density at which matter can not fully materialize during one cycle of EV. In double slit experiments, the state of slits would be fixed in each cycle of VE; as pictures are on movie film – only appearing as movement to the viewer due to persistence. I know it seems crazy, but it would explain our limit for the speed of light/gravity. And you already know we are 99.999% empty space – right?

  • John Mclaren

    My current understanding is that the universe is an electromagnetic field and matter is standing waves/interference pattern. All changes propagate in this field or fabric at c, but gravity is a warp in the field that once established is detected instantaneously.

    Position is detected instantly, faster than light, but changes in intensity are limited to light speed.

    It’s comparing a permanent bend to a traveling ripple.

  • anderlan

    So, from Neptune’s perspective, the sun both shines from and pulls from a position we knew it to be at 4 hours ago (3.4 million km more or less south)?

    What does this mean for galactic structure and rotation? We are effected by the mass of the center of the galaxy as it was positioned 20,000 years ago, and the mass at the other side of the galaxy as it was positioned 75,000 years ago. Are the structures of galaxies related to the natural evolution of structures separated by dozens of thousands of light years? The speeds of these structures are fractions of a percent c, and in some cases more.

    With just 4 and even 3 orders of magnitude difference between the relative speeds and C—-I could see some patterns emerging. I’ve never heard anyone talk about this.

  • Four Golf Eight Victor

    can gravity exert force on electrons?

  • Four Golf Eight Victor

    I understand ‘shaking off’ electrons is to increase radio frequency (by oscillator) to a point that these electrons fly off from the conductor, but how is graviton shaken off (not catastrophically) to attain the same speed of electrons, the speed of the latter is equal to the speed of photons in light?

  • Four Golf Eight Victor

    speed of light, as I understand is not constant. It is determined by various and at times opposing factors. Considering Einstein’s theory that light can be curved or bent along its path will to a some degree determines the light’s actual incidence on objects along its path.

  • David Leak

    My uneducated guess if I may is that Gravitational Waves and light streams (Electro-magnetic waves) are not at all relative to space or time. They each seemingly travel at a similar pace throughout space over time because that’s the only way we’d be able to physically realize them. Sound waves (which is what I imagine to be the one and only true universal metronome) carries both G and Em to us in a way in which we may interpret, reason, react to each without causing a fatal error in our nervous and neuro-system. Imagine if we decide to run every single program on a machine while playing every single sound application, simultaneously running every webservice, uploading and downloading every single piece of data stored within and captured from external sources, additionally decompressing every single file, folder, and program and using every single peripheral… you get the point. It would cause a fatal error and blow up the battery, sound card, video card, memory card and processor as soon as you hit Return. Fact, Gravity, EM, SW, exist separately and in the absence of one or two would not eliminate the last. Fact, while our thought waves are circular (not linear) in nature and don’t actually incorporate time until data is observed in order to reason and logically process all info in a cognitive way. We distinguish the positive from negative input to order and file information without overload. Imagine a song which doesn’t observe laws of space or time, all notes, measures, instruments played at once. Your head would explode. Space and time aren’t relative. Sound and Time are. Gravity and light don’t observe space or time so to say that they travel at the same speed is incorrect. We only observe gravity and light, perceiving they travel at the same speed. At least that’s what I took away from the double slit experiment. I’m not a scientist btw, high school dropout so I’m probably 99E 16 wrong about this.

    • http://www.throughchallenge.com David R Thomas

      Dave, I could have been a dropout but find without so called proper education. I find myself seeing things and understanding ( ) adding new thought possiblities that will need to be studied and expressed. Great thinking. By the way, I am just an amateur at the stuff of everything also.

  • KnightStream

    Help me resolve this… If gravity and light travel at the same “speed”, is speed also a factor of “distance”? If so, then the single moments after the big bang resulted in matter >and< light traveling at the same speed? How could this be so, if distance and gravity increased at the same rate that the “space” around it (them) expanded? That would seem – to me – to indicate that 186,000mps would actually be relatively “slower” now than it would have been measured at the big bang. [practical metaphore]: you are in a “current” time bubble – but travel back to the big bang. You perceive matter and light passing very rapidly, but in one of your “2019 bubble”s hours, you witness formations that would have taken eons in “today’s” hour. So, the further we venture – in time – from the origin, the more “relative” speed/gravity/time slows down. Everything still measures the same (speed), but it’s actually slowing, because both the speed of the object/force AND the method of measurement are affected by the same chronology. (Am I way off here? Help me understand why, please.)

  • Alan Helmick

    First off, Earth would NOT push off in a straight line. The orb is wobbling, it would spin off like any unbalanced gyroscopic top that just lost the string holding it in a circle (the moon is our counterweight). A straight line would be impossible. Also, the sun would have to “disappear” for this theory to work, which is implausible. Speed has the component Time. Time is relative to the object (observer). An object traveling at “light speed” does not experience time as we do, Muons have proven this relativity, they do not experience the same “distance” or “time” that we do, in the “same space”. So our “observation” of time is our own and it has a limit, the limit in which matter becomes energy, just because we “observe” this as a limit means we “physically” cannot sample beyond this speed. The reasons for this are unknown but I would assume “quantumly” this is the limit of contiguous string coherence (for matter) and interrupting this would disrupt spacetime (how far can you dilate or stretch the fabric of spacetime before converting to energy?), much the opposite of a black hole, which would conform to ultimate string coherence and density. Truly this does not mean that gravity and light travel at “our” speed of observation ultimately… as someone in a “near light speed” rocket sees the light pulling away at the same speed! (oops, how can that be?) :). Really want to twist your noodle? calculate what happens when you dilate time by traveling at the speed of light. (becomes infinite, unless you are “massless” aka no “rest frame”), so since nothing is lost, what happens in this transformation that exponentially changes gravity, the length of objects and the wave like function of matter, or a lack of a “rest frame” aka “timeless”? (all matter has a wave-particle function potentiality) We can make an electron from two photons and altho massless in graphene… when collected, those electrons have mass…(Mass: 9.10938356(11)×10−31 kg) so how do “massless” particles combine to make “mass”? Let me know ok, I’m curious. :)


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