God created the physical universe and Time: Genesis 1 verses 1-3; In the beginning God created the heavens and the earth. Now the earth was formless and empty, darkness was over the surface of the deep, and the Spirit of God was hovering over the waters. And God said, “Let there be light,” and there was light. Genesis 1 verses 14-15; And God said, “Let there be lights in the vault of the sky to separate the day from the night, and let them serve as signs to mark sacred times, and days and years, and let them be lights in the vault of the sky to give light on the earth.” And it was so.
The speed limit of the universe refers to the speed of light in a vacuum (
It is not merely the speed at which light travels, but a fundamental property of spacetime that sets the maximum speed at which any matter, energy, or information can move through space.
1. Mass Increases with Speed
According to Albert Einstein’s theory of Special Relativity, as an object with mass accelerates and moves faster, its relativistic mass-energy increases. To continue accelerating, it requires progressively more energy. As an object approaches 
2. Massless Particles
Particles that have no invariant rest mass—such as photons (particles of light) and gluons—do not need to accelerate; they naturally travel at 
3. Causality and the Speed of Information
The speed limit is crucial for preserving causality—the principle that a cause must always precede its effect:
- The speed of light is essentially the speed of causality itself.
- If information or matter could travel faster than
, it would be possible in certain reference frames to observe an effect before its cause occurred (effectively traveling backward in time), creating severe physical paradoxes.
4. Cosmic “Lag”
Because the speed of light is finite, looking out into space is equivalent to looking back in time:
- Light from the Sun takes roughly 8 minutes and 20 seconds to reach Earth.
- Light from distant stars and galaxies takes thousands or billions of years, showing them as they existed in the past.
In modern physics, gravity and quantum behaviour are described by two distinct, highly successful theoretical frameworks that explain how the universe works at different scales:
1. The Scientific Explanation for Gravity: General Relativity
At a macroeconomic/cosmological scale, gravity is described by Albert Einstein’s Theory of General Relativity (1915).
- Space-Time Curvature: Rather than viewing gravity as an invisible force pulling two masses together (as Isaac Newton originally conceptualized), General Relativity explains gravity as a structural deformation of spacetime—a four-dimensional continuum combining the three dimensions of space with time.
- Mass Informs Spacetime: Massive objects (like stars, planets, and black holes) curve and distort the spacetime around them.
- Motion Follows Geometry: Objects in motion, including light rays and smaller celestial bodies, travel along the straightest possible paths in this curved spacetime (called geodesics). What we feel as the “pull” of gravity is simply our motion along these geometric curves. For instance, the Earth orbits the Sun because it is moving through a spacetime well carved out by the Sun’s mass.
- Time Dilation: Because mass curves time along with space, time moves slower in stronger gravitational fields relative to weaker ones (gravitational time dilation).
2. The Scientific Explanation for Quantum Behaviour: Quantum Mechanics
At atomic and subatomic scales, the Universe behaves according to Quantum Mechanics. Rather than predictable, continuous motion, microscopic particles display counterintuitive properties governed by probability:
- Wave-Particle Duality: Matter and light exhibit both particle-like and wave-like properties. Electrons, photons, and other particles do not exist at precise, single points until they are measured; instead, they exist as a wavefunction (
) that describes the probability of finding the particle in various states or positions (governed by the Schrödinger equation).
- Quantization of Energy: Physical quantities like energy, angular momentum, and spin cannot vary continuously. Instead, they exist in discrete packets or units called quanta. An electron in an atom, for instance, jumps between specific energy levels rather than sliding smoothly between them.
- The Uncertainty Principle: Formulated by Werner Heisenberg, this fundamental limit states that certain pairs of physical properties (like a particle’s precise position and momentum) cannot both be known simultaneously with infinite precision. Observing one property inherently increases the uncertainty of the other.
- Superposition: Before a measurement occurs, a quantum system can exist in a linear combination of multiple physical states simultaneously. The system “collapses” into a single definite state only upon interaction with an external observer or environment (quantum measurement).
- Quantum Entanglement: When particles interact in specific ways, their quantum states become intertwined. Measuring the state of one particle instantly determines the state of its entangled partner, regardless of the distance separating them—a phenomenon Einstein famously called “spooky action at a distance.”
The Unresolved Frontier: Unifying Gravity and Quantum Physics
While General Relativity excels at explaining massive, cosmic-scale objects and Quantum Mechanics perfectly predicts subatomic phenomena, they are fundamentally incompatible mathematically:
- Deterministic vs. Probabilistic: General Relativity relies on a deterministic, smooth, and continuous spacetime geometry. Quantum mechanics operates on discrete, probabilistic, and fundamentally uncertain fluctuations.
- The “Singularity” Problem: At extreme locations where both massive weight and tiny scales overlap—such as the centre of a black hole or the moment of the Big Bang—General Relativity yields infinite density and breaks down.
To reconcile these two theories, theoretical physicists are actively working on a unified theory of Quantum Gravity. Leading candidate frameworks include:
- String Theory: Proposes that fundamental particles are not zero-dimensional points, but tiny, vibrating one-dimensional strings operating in 10 or 11 dimensions.
- Loop Quantum Gravity (LQG): Suggests that spacetime itself is not a smooth continuum, but is instead broken down into discrete, microscopic loops or “pixels” of space at the Planck scale (
meters).
In theoretical physics, a graviton is the hypothetical elementary particle that mediates the force of gravity in the framework of quantum field theory.
If gravity can be described quantum mechanically, just like the other three fundamental forces of nature, the graviton would be its quantum force-carrier (or gauge boson).
Key Properties of the Graviton
Physicists have deduced what properties a graviton must possess based on the known behaviour of gravity:
- Spin-2: Unlike the photon (spin-1) or the Higgs boson (spin-0), the graviton must have an intrinsic angular momentum (spin) of 2. This unique tensor nature is required to reproduce the attractive, geometry-bending nature of gravity described by Einstein’s General Relativity.
- Massless: Gravity has an infinite range (it acts across cosmic distances), which mathematically requires the particle mediating it to have zero rest mass.
- Electrically Neutral: Gravitons carry no electric charge.
- Speed of Light (
): Because it is massless, a graviton would travel through a vacuum at the exact speed of light.
The Analogy to Other Fundamental Forces
To understand how gravitons fit into physics, it helps to compare gravity to the other fundamental forces in the Standard Model of Particle Physics:
| Force | Mediator / Particle | Observed? |
| Electromagnetism | Photon | Yes |
| Strong Nuclear Force | Gluon | Yes |
| Weak Nuclear Force | W & Z Bosons | Yes |
| Gravity | Graviton | Theoretical (Unobserved) |
Just as electromagnetic radiation (light) is made up of individual packets called photons, gravitational waves—ripples in spacetime detected by observatories like LIGO—would theoretically be made up of a stream of individual gravitons.
Why Haven’t We Detected Gravitons?
Detecting an individual graviton is one of the most difficult challenges in modern physics:
- Extreme Weakness of Gravity: On the scale of individual subatomic particles, gravity is fantastically weak compared to electromagnetism (roughly
times weaker).
- Tiny Cross-Section: Because a graviton interacts so weakly with matter, an experiment capable of detecting a single graviton would require a detector with astronomical mass (e.g., a detector the size of Jupiter placed in orbit around a neutron star) and would still take thousands of years to register a single interaction.
Status in Modern Physics
The graviton remains purely hypothetical. While standard General Relativity treats gravity as a smooth, continuous curvature of space rather than a stream of particles, candidate theories of quantum gravity—such as String Theory—naturally predict the existence of spin-2 massless particles, making gravitons a central feature of quantum physics research.
Whether time exists as a physical entity depends heavily on how physics defines an “entity.”
If by “physical entity” you mean a substance or fluid made of particles (like water) or an independent object you can touch, isolate, or collect in a jar, no: time is not a physical entity. You cannot have a container of time, nor is there a “time particle” (unlike gravity, which theoretically has the graviton, or light, which has the photon).
However, if by “physical entity” you mean an objective feature of physical reality—something that exists independently of human thought and can be measured, warped, and calculated—then modern physics overwhelmingly treats time as real, but as a dimension or relationship rather than an object.
1. Spacetime: A Geometric Dimension, Not a Substance
In Albert Einstein’s General Relativity, space and time are merged into a continuous, four-dimensional fabric called spacetime.
- Time is a dimension of measurement (like length, width, and height).
- Just as a meter stick measures distance between physical points, a clock measures the interval along a trajectory through spacetime.
- Spacetime can stretch, warp, and curve around mass and energy. Strong gravitational fields and high speeds literally slow the rate at which time passes (gravitational and kinematic time dilation).
While the “fabric” of spacetime feels like an object in Einstein’s mathematics, time itself is a coordinate direction within that geometry, not a tangible substance filling the void.
2. The “Block Universe” (Eternalism)
General Relativity supports a view known as the Block Universe. In this interpretation, the past, present, and future all exist simultaneously in a static 4D block of spacetime.
- Under this framework, the “passage” or “flow” of time is a subjective experience of observers moving along their worldlines, rather than a physical movement of time itself.
- The “present moment” isn’t a physical wave traveling through the cosmos; it is simply a coordinate point, much like “here” is a point in space.
3. The Arrow of Time: An Emergent Property of Entropy
If physical laws at the microscopic scale are symmetric (they work the same forward or backward in time), why do we experience time as flowing strictly forward?
Physics explains the Arrow of Time not as a physical entity pushing us forward, but as an emergent property of thermodynamics:
- The Second Law of Thermodynamics dictates that the overall disorder (entropy) of an isolated system always increases.
- Eggs crack and drop; they never un-crack and jump back into your hand.
- The forward direction of time is essentially the direction in which the universe goes from a state of low entropy (the Big Bang) to higher entropy. Time’s “flow” is a measure of changing physical states and relationships, rather than a physical stream.
4. Quantum Mechanics: Does Time Dissolve at the Base Level?
In standard Quantum Mechanics, time is an external background parameter—a global tick-tock against which quantum states evolve. However, when physicists try to combine quantum mechanics with general relativity to form a theory of Quantum Gravity, time seems to disappear entirely.
- The Wheeler–DeWitt Equation: In equations attempting to describe the quantum state of the entire universe, the time variable
vanishes.
- Relational Time: Physicists like Carlo Rovelli argue that at the fundamental Planck scale (
meters), time does not exist as a fundamental feature of the universe. Instead, physical systems simply evolve relative to one another (e.g., system A changes relative to system B), and what we call “time” is an illusion or macro-level emergent phenomenon, similar to how “temperature” isn’t a property of an individual atom, but emerges when you group billions of them together.
Summary
Time is not a physical object or particle. Instead, physics views time as:
- A dimensional coordinate of spacetime used to locate events and calculate intervals.
- A measure of change and entropic evolution in physical systems.
- Potentially an emergent phenomenon that arises from deeper quantum relationships where time itself does not exist.
The combination of quantum mechanics with general relativity will give us God/Creator, who is by the way non-physical [John 4 verse 24; God is spirit, and his worshipers must worship in the Spirit and in truth.], with time disappearing completely, though science is not there yet, maybe in the future. Which is a contradiction inherent in the concept that postulates time disappearing completely, with the past, present, and future all existing simultaneously.
