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the claim

Comoving and proper distances diverge in an expanding universe

the verdict
COMMON KNOWLEDGE
Legacy classification; evidence review pending
Recorded sources
no sources on either side

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Is it true that comoving and proper distances diverge in an expanding universe?

Comoving distance remains constant with cosmic expansion for objects sharing the Hubble flow, whereas proper distance scales directly with the scale factor, making their divergence a foundational principle of standard cosmology.

Verdict: COMMON KNOWLEDGE · 0 sources for, 0 against · Last checked

The analysis

The claim is a standard definition in physical cosmology regarding how coordinate distances and physical proper distances behave as space expands. While textbook common knowledge in astronomy, papers such as [3] and [10] touch upon the definitions and dynamics of comoving and proper distances in expanding spacetimes.

What does the evidence say?

The claim is a standard definition in physical cosmology regarding how coordinate distances and physical proper distances behave as space expands. While textbook common knowledge in astronomy, papers such as [3] and [10] touch upon the definitions and dynamics of comoving and proper distances in expanding spacetimes.

Receipt History
first checked06 Aug 2026
judged → COMMON KNOWLEDGE · 006 Aug 2026
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