Gravity: force, geometry, quantum spacetime
Gravity evolved from Aristotelian natural motion to Newton's universal force, then to Einstein's curved spacetime, and now to quantum gravity candidates like LQG. Each framework redefined what gravity fundamentally is.
- 350 BCE - 1687Aristotelian Physicsframework
From natural motion to universal gravitation
Aristotle saw gravity as bodies seeking natural place; Newton redefined it as a universal force proportional to mass and distance.
- 1687 - 1915Special Relativityframework
From force to spacetime curvature
Einstein's general relativity replaced Newton's force with curved spacetime, explaining gravity as geometry.
- 1986 - 2026Loop Quantum Gravityframework
Quantizing spacetime
LQG quantizes gravity by discretizing spacetime, using spin networks and area operators, diverging from string theory.
- 1983 - 2026Modified Gravity Theoriesframework
Challenging dark matter
Modified gravity theories propose deviations from Newton/Einstein at low accelerations to explain galaxy rotation without dark matter.
Earliest systematic framework; gravity as natural motion toward Earth's center.
Gravity is an intrinsic tendency of heavy bodies to move toward their natural place.
Unified terrestrial and celestial gravity under a single inverse-square law.
Gravity is a universal attractive force between all masses, acting instantaneously at a distance.
Gravity is an intrinsic property of matter (Aristotle).
Newton replaced intrinsic tendency with universal force acting at a distance.
Gravity is a force acting instantaneously (Newton).
Special relativity's finite speed of light forced gravity to be mediated; GR made it geometry.
Evidence and routing notes4 inspected regions
Coverage
- Direct atlas regions selected: physics.relativity, physics.classical_mechanics, physics.astrophysics.
- Adjacent atlas lenses retained for context: physics.physics.
- Regions were reranked by focus-term match, direct-domain routing position, framework density, and concept/article matches.
- No-analogy guardrail excluded: intellectual_history.conceptual_history.
Inspected Regions
- Relativitydirect#1 · substantive · score 142
- Classical Mechanicsdirect#2 · substantive · score 128
- Astrophysicsdirect#3 · substantive · score 117
- Physicsadjacent#4 · substantive · score 75
Excluded Regions
Excluded because the region only had broad route or token overlap, not exact concept or direct-domain support in the inspected atlas packet.
Excluded because the region only had broad route or token overlap, not exact concept or direct-domain support in the inspected atlas packet.
Excluded because the region only had broad route or token overlap, not exact concept or direct-domain support in the inspected atlas packet.
Excluded because the region only had broad route or token overlap, not exact concept or direct-domain support in the inspected atlas packet.
Warnings
- General relativity framework not directly in atlas; special relativity used as proxy.
- LQG concept map edges are internal; no direct link to earlier frameworks shown.
- Modified gravity theories are speculative; atlas coverage limited to concept map.