One Small Change to Gravity
A hundred years after Einstein reshaped Newton’s universe, it’s possible we may now have a way to think about how to bring their two seemingly incompatible theories of gravity together.
For a century, we’ve lived with an uncomfortable truth: Newton and Einstein appear to describe gravity in fundamentally different ways, yet both of their philosophical theories undeniably work extraordinarily well.
But they don’t agree.
Why ‘Bringing Them Together’ matters
For more than three centuries, gravity has been described using two remarkably successful frameworks.
Newton described gravity as a force that acts between masses, and his equations remain the practical workhorse of orbital mechanics and engineering.
Einstein replaced the idea of a “pull” with the curvature of spacetime: matter and energy shape spacetime, and objects move along that geometry.
Both theories work extremely well in their domains. Yet, from a “what is really happening?” perspective, they can feel like different descriptions of different realities: Newton’s force (as classically understood) is instantaneous action at a distance, while Einstein’s gravitational influence propagates at the speed of light. The puzzle is not that either theory fails; the puzzle is that both succeed. This leaves us with the feeling that something about the underlying physical story is still unresolved.
Before Proceeding
It must be said that the consistency of General Relativity and Newtonian gravity across a vast range of scales remains one of the great successes of science.
Therefore, before we proceed, it’s important to state categorically that there is no new theory of gravity being presented here. What is being presented is a structured reinterpretation of existing physics, grounded in established mathematics and aligned with current scientific evidence.
Gravitational Waves
The discovery of gravitational waves confirmed one of Einstein’s most striking predictions: spacetime is not static. It stretches, squeezes, and carries disturbances across the universe. That discovery gives fresh force to an intuitive question. If space can stretch and ripple, can it also compress in a physically meaningful sense?
And that question opens a new door:
If space can deform, then perhaps deformation is not only geometric in a mathematical sense but also interpretable as a physical response. In this framing, matter does not merely “sit in” space and mysteriously attract other matter from afar. Matter compresses the surrounding space. If this is the case, then does that compression store a condition within space, and does the tendency of space to respond to that condition appear as pressure? Gravity, in this picture, is best imagined not as an invisible pull between masses but as the pushback of compressed space.
The New Conceptual Idea
If space can compress, it must also be able to uncompress.
That release, that outward pressure, is exactly what Newton interpreted as gravitational force. And as Einstein’s curvature describes it, it is what holds planets in orbit and keeps our feet on the ground, just as Newton’s force describes.
Is it possible that such a small addition to the understanding and explanation of GR, a simple extension, could be so eventful?
This proposition is a bold conceptual shift in how we understand gravity. Rather than challenging the mathematics or foundational structure of GR, this concept proposes a simple reinterpretation of its visual and conceptual language. This work does not challenge Einstein or Newton; it stands on their shoulders. We now have…
A New Way to View Newton and Einstein as Complementary.
Toward a More Harmonious View!
SpacePressure
For most people, gravity is taught in fragments. Newton explains the falling apple and the orbiting Moon. Einstein explains black holes, warped spacetime, and gravitational waves. The mathematics may be consistent within physics, but the concepts often remain divided in the public imagination. One theory sounds mechanical and familiar; the other sounds abstract and geometric. SpacePressure is an attempt to make those pictures feel less like rivals and more like layers of the same story.
The core idea is simple yet profound: instead of Space being stretched into a curve by the presence of mass, it is compressed while being stretched (pushed) into a curve, and this logical compression gives rise to a force called SpacePressure. The behaviour already described by Einstein’s equations may also be interpreted as a compression–response process within space itself. In this view, gravity reflects how Space responds dynamically to the presence of mass.
A Universe Built on Pressure, Not Attraction
When gravity is redefined as SpacePressure, Space is no longer a passive emptiness that mass mysteriously “pulls” through. Space is an active medium, capable of being compressed, storing that compression, and generating pressure gradients that move planets, stars, and galaxies, and holds onto the Earth.
Interpretation of a science theory is not trivial decoration. Science advances through equations, but it also advances through better conceptual pictures of what those equations might mean. Gravity may be easier to understand if space is treated not as passive emptiness but as something dynamically responsive to the presence of mass and energy. This isn’t the old aether revived SpacePressure describes what spacetime does, not what fills it.
Traditional View of Gravity
The traditional understanding of gravity, tells us that matter attracts matter, and that every particle of mass pulls on every other. This idea has served science well, giving us equations that predict orbits, tides, and the motion of galaxies. But one question remains unanswered:
How does matter actually attract matter?
Gravity is all about the idea that things with mass attract each other. The more massive something is, the stronger its pull. If gravity only depended on mass, you might think heavier objects would fall faster than lighter ones, and the heavier the object, the stronger the pull.
But when you see a feather and a heavy weight fall at the same speed in a vacuum, it doesn’t mean gravity isn’t real. Instead, it makes you want to dig deeper into how gravitational interactions work. The video with Brian Cox dropping a bowling ball and a feather from a high place in a vacuum is a great way to think about this. You can find it on YouTube by searching for “Brian Cox Bowling Ball Feather in Vacuum.” This prompts a reevaluation of the underlying principles governing gravitational interactions.
Einstein described how mass curves spacetime, and Newton described how it causes motion, yet neither theory explicitly identifies a physical mechanism that pulls one body toward another. Even today, explanations often rely on entities or processes that are not directly observed, but are inferred from their effects. As it stands, we can calculate the effects of gravity with extraordinary precision, but the deeper question of why gravity exists remains open.
Space and Matter: Hand in Hand
The Space compression concept proposes that gravity is not a force of attraction between masses, but a reaction between Space and Matter, a dynamic relationship. When matter intrudes into Space’s domain, Space responds, compressing around it and exerting pressure to restore balance. This push from Space is what we experience as gravity.
On a cosmic scale, this pressure keeps planets, moons, and stars in balance, pushing them together and holding them apart. On a smaller scale, it is the gentle but constant pressure that pushes an apple to the Earth and keeps us grounded. Gravity, in this view, is the harmony between Space and Matter; it takes two to Tango!
The Cosmos - Einstein
This single shift unlocks a new, unified way of understanding the cosmos:
- Space has structure, memory, and the ability to compress.
- Bodies don’t pull each other—they move under pressure gradients.
- A fresh examination of galaxy rotation, which is often attributed to dark matter.
- Gravity may become easier to discuss alongside quantum concepts.
- Gravitational waves may be viewed through the additional lens of pressure propagation within spacetime.
The Apple on Earth - Newton
And on Earth, everything is held together by the gentle, ever-present pressure of space leaning against our planet; so comforting we don’t notice it.
Newton, Einstein, and a Proposed New Perspective
Newton described gravity as a force that acts between masses, and his equations remain the practical workhorse of orbital mechanics and engineering.
Einstein replaced the idea of a “pull” with the curvature of spacetime: matter and energy shape spacetime, and objects move along that geometry.
Both theories work extremely well in their domains. Yet, from a “what is really happening?” perspective, they can feel like different descriptions of different realities:
Newton’s force (as classically understood) is instantaneous action at a distance, while Einstein’s gravitational influence propagates at the speed of light.
And both leave deeper questions open, such as:
- Why does spacetime curve?
- What physically causes gravitational behaviour?
- How can gravity be reconciled with quantum mechanics?
- Why do galaxies rotate too fast unless we add “dark matter”?
- Why is the Universe accelerating unless we add “dark energy”?
Interesting Headline and Article in the Magazine Space.Com
‘One of the great unresolved embarrassments of physics’: It’s been 340 years since Newton and scientists still haven’t solved the secret of gravity
“The mystery is not solved.”
By Robert Lea, published May 27, 2026
Link: Space.Com
This article highlights exactly the question that motivated me to explore SpacePressure. While developing my book, I became fascinated by the fact that Newton described gravity mathematically, Einstein described gravity geometrically, yet the deeper physical interpretation of gravity remains an open question. That question eventually led me to explore whether spacetime curvature could also be interpreted as the compression and pressure state of space itself.”
The SpacePressure proposal is a new perspective aimed at this “missing mechanism” Space. It does not seek to discard Newton or Einstein, but to offer an underlying physical interpretation that could help both descriptions sit within one coherent picture.
Newton: The Mathematics of Gravity
Newton provided the first scientific description of gravity’s behaviour with a simple inverse-square law:
F = G m₁m₂ / r²
This equation predicts planetary motion, tides, and falling bodies with extraordinary accuracy for weak gravity and low speeds. However, Newton’s framework is primarily a description of how bodies move under gravity, not an explanation of what gravity is.
In Newton’s era, the mechanism remained mysterious, and the notion of instantaneous action at a distance was philosophically troubling even to Newton himself.
Einstein: The Geometry of Gravity
Einstein’s General Relativity reframed gravity as geometry. Mass–energy does not simply “act on” space and time; it reshapes spacetime. Objects follow the resulting curvature, which explains phenomena that Newtonian gravity does not naturally account for: Mercury’s orbital anomaly, gravitational lensing, gravitational time dilation, black holes, and gravitational waves.
However, while profoundly successful, Einstein’s theory can still be read as primarily descriptive: it tells us what the gravitational field looks like (curvature) and how matter moves within it (geodesics), while leaving open questions about the underlying physical “substance” of spacetime and why matter produces these effects.
SpacePressure: A Proposed Mechanism
SpacePressure proposes that gravity arises not from attraction alone or curvature alone, but from the compression of space around matter.
In this interpretation, mass “squeezes” space, producing pressure gradients. Objects are not pulled inward; they are pushed by surrounding compressed space.
Key Interpretive Claims (as proposed)
- Compression: Matter compresses the space around it.
- Gradients: Compression forms spatial pressure gradients.
- Motion: Objects move toward regions of stronger compression because surrounding space “pushes” them.
How This Maps to Newton and Einstein
- Newton’s equations describe the far-field behaviour of a pressure gradient.
- Einstein’s curvature can be read as the geometric expression of compressed space.
- SpacePressure (proposed) supplies a conceptual mechanism beneath both descriptions.
Under this view, curved spacetime is not the “cause” of gravity; it is the shape taken by space when compressed. The goal is not to replace established results, but to add an interpretive layer that clarifies the “why” behind the mathematics.
How the Three Frameworks Coexist
One way to see the historical progression is not as contradiction but as refinement—each framework revealing a different layer:
- Newton captured the mathematics of motion.
- Einstein captured the geometry of gravitation.
- SpacePressure (proposed) aims to offer a physical interpretation consistent with both.
This interpretation suggests a layered understanding of gravity: inverse-square behaviour in weak fields, geometric behaviour in strong fields, and a deeper physical picture that motivates both.
How SpacePressure Connects to Real Physics
A Conceptual Bridge Between Idea and Observation
A Mathematical Anchor
C(x) = ln(√(-g))
C(x) ≈ Φ / c²
This scalar encodes how local spacetime volume changes from point to point and connects to gravitational potential.
From Mathematics to Intuition
C(x) describes how “squeezed” space is at each point. Differences in C(x) form gradients that act like pressure differences, guiding matter and light.
Connection to Real Physics
- Measuring Gravity —
The “Big G” Problem
Laboratory measurements of G remain difficult. SpacePressure interprets this as probing small variations in spatial compression.
- Cosmology —
The Bullet Cluster
The Bullet Cluster shows separation between visible matter and gravitational lensing. SpacePressure suggests that some gravitational effects may be interpreted as structured spacetime compression following collision events.
Scientific Position
No new equations. No new forces. Fully consistent with General Relativity. Interpretive, not a replacement theory.
Why This Is Not Pseudoscience
- Built from standard GR mathematics.
- Does not contradict observations.
- Explicit about limitations.
- Invites falsifiability and scrutiny.
What Would Prove This Wrong?
Failure to remain consistent with General Relativity, contradictions with observations, inability to connect to geometry, or lack of conceptual utility.
Additionally, it would be falsified if space cannot be meaningfully interpreted as compressible in any physically consistent way.
This would require a resolution of how spacetime exhibits curvature, stretching, and dynamical response (as seen in General Relativity and gravitational wave observations), while being fundamentally incapable of compression.
One Small Change to Gravity – One Giant Leap for Science
The Book Behind the Idea
This began as a quiet curiosity that followed the author across continents and careers — a question about gravity that refused to let go.
The book grew from years of reflection, hundreds of questions, and a stubborn belief that a small idea might matter. In the book, you will read how it started as “One Small Change to Gravity” and became “One Giant Leap for Science.” You’ll read how it literally happened.
One Small Change to Gravity – One Giant Leap for Science explores the development of the SpacePressure concept, the questions that inspired it, and its possible implications for gravity, cosmology, and the nature of space itself.
The Basis of This Book
At its heart, this book presents a simple question with extraordinary implications. Even if it serves only as a provocative thought experiment, it invites readers to rethink gravity itself — and that is a conversation worth starting.
Book Background
Beyond its scientific significance, the story also weaves in a narrative about the journey of discovery behind this idea. A retired non-scientist who questions standard scientific paradigms shares personal insights and experiences, offering readers a glimpse into the process of challenging conventional wisdom and exploring new ways of thinking.
A Note from the Author
The author makes it clear that he is not trying to disrupt science or promote fringe ideas such as flat Earth theories.
He deeply respects the scientific community, and it is genuine curiosity and passion for exploration and understanding that drives this work.
Summary
Physics has focused on getting the equations of gravity exactly right, and it has succeeded remarkably well. But interpretation often lags behind mathematics. SpacePressure doesn’t change the equations — it asks whether we’re fully understanding what they imply about Space itself. That’s not something physics has ignored, but it’s not something it has completely settled either.
Physics often progresses in two stages: first by finding the right conceptual picture, and then by expressing that picture mathematically with precision.
SpacePressure proposes that the current mathematics of gravity may already be pointing toward a more physically active conception of Space than is commonly emphasised. If that is true, then the path forward may not require discarding existing gravitational theory, but extending its interpretation and formal structure.
That is an intellectually serious position. SpacePressure does not claim that the work is done. It claims that there may be something here worth formalising.
Brian C. Solomon
The concept of SpacePressure does not change gravity. It changes how we interpret what gravity is. A short introduction to SpacePressure is here:
Structured Introduction to SpacePressure
And/or: You can have an AI analyze the concept using the dedicated version here:
Copy this link and paste it into your AI tool for review:
https://onesmallchangetogravity.com/ai-background/ai-research/
Then ask your AI to review it.
Brian C. Solomon is an independent Australian author and retired entrepreneur whose career has spanned international technology ventures, education, and business development across Australia and China. His longstanding interest in gravity and cosmology led to the development of the SpacePressure concept and the writing of One Small Change to Gravity – One Giant Leap for Science.
About the Author
