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In graph Frontier
AstronomyEstablished

Expansion of the universe

The expansion of the universe is the increase in distance between gravitationally unbound parts of the observable universe with time.

Expansion of the universeBig BangDark energyRedshiftHubble–Lemaître lawUniverseCosmic microwave backgroundGeneral relativityCosmic inflation

At a glance

Type
change
Disciplines 1
Astronomy
Mental models 0
—
Role in the graph
Connector

Key signals

Cross-disciplinary reach
Disciplines
1
  • Astronomy
Evidence & development

Dependencies

What this concept builds on and what it makes possible — derived from the atlas’s dependency, causal and structural relations, not from every related edge.

Foundations · builds on

Big BangcausesExpansion of the universeEstablished

Open Big Bang →

Big Bang causes expansion of the universe.

Mechanism: The Big Bang set the expansion in motion: space itself has been stretching ever since, carrying galaxies apart from one another.

Sources:

System context

Dark energyis part ofExpansion of the universeEstablished

Open Dark energy →

dark energy is part of expansion of the universe.

Mechanism: Dark energy drives the expansion of the universe: its repulsive effect grows with the volume of space, pushing galaxies apart ever faster.

Sources:

Structural role & consequence

Interpreted from the current atlas graph — what the connections mean, not just how many there are.

  • Currently dark in the atlas: no key date stored · 4 of 4 of its relations lack claim-level evidence.

    atlas representation · Describes the current Thinking OS representation, not the state of the world.

  • Builds on 1 foundation (requires / depends-on / derived-from / emerges-from).

    structural · Structural graph analysis — not a claim of importance, causation or history.

  • Structural neighbourhood: 4 → 17 → 50 concepts reachable within 3 hops.

    structural · Structural reach — being reachable is not the same as being understood.

  • All 4 of its relationships stay within its own discipline — a field-specific concept in the current atlas.

    structural · Structural graph analysis — not a claim of importance, causation or history.

0%

cross-field
4 within-field, 0 cross-field

0 of 4 relations carry evidence · concept has a verified source

Strengths & constraints

Constraints

  • Evidence coverage currently thin in the atlas — few of its relationships carry claim-level evidence. atlas representation
  • No dated history stored — the atlas records no key date for this concept. atlas representation

Conditions

  • Its dependency reading rests on 1 foundation relation. structural
  • Read structurally — most of its relationships carry no external evidence yet, so claims here are graph-derived. structural

Dependency radial

What this concept builds on (left) and what it makes possible (right) — derived from dependency and causal relations.

Big BangExpansion of the univ…◀ builds onenables ▶

Seen through each discipline

How this concept sits in each of its fields — derived from its real connections in the graph, not asserted.

Astronomy

Through this lens it connects to Big Bang, Dark energy, Redshift and Hubble–Lemaître law.

Expansion of the universe through the Astronomy lens →

Concepts that look related but are not yet connected here — candidates for a connection to reason about, not established links.

The scientific picture
  • Connects 4 other ideas across 1 discipline.
  • Most of its connections are of the “Evidence” kind.

Derived from the graph’s real structure — observations, not a score.

Sources