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the claim
Hubble expansion affects two rope-tied galaxies by placing tension on the tether
the verdict
INSUFFICIENT LEANING
refutedsupported
the weight of evidence
3 sources for · 0 against
AS REPORTEDno primary record reached; this is what the reporting says

Retrieved academic references and physics discussions frame thought experiments regarding tethered galaxies and cosmological expansion, but do not comprehensively establish the complete mechanical effect on rope tension.

Evidence for · 3
Solutions to the tethered galaxy problem in an expanding universe and the observation of receding blueshifted objects
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# Solutions to the tethered galaxy problem in an expanding universe and the observation of receding blueshifted objects American Journal of Physics. Published: 2003-03-11. 33 citations. ## Authors - Tamara M. Davis (UNSW Sydney) - Charles H. Lineweaver (UNSW Sydney) - John K. Webb (UNSW Sydney) ## Topics - Cosmology and Gravitation Theories - Galaxies: Formation, Evolution, Phenomena - Astronomy and Astrophysical Research --- # Solutions to the tethered galaxy problem in an expanding universe and the observation of receding blueshifted objects Department of Astrophysics, University of New South Wales, Sydney, 2052, Australia We use the dynamics of a galaxy, set up initially at a constant proper distance from an observer, to derive and illustrate two counter-intuitive general relativistic results. Although the galaxy does gradually join the expansion of the universe (Hubble flow), it does not necessarily recede from us. In particular, in the currently favored cosmological model, which includes a cosmological constant, the galaxy recedes from the observer as it joins the Hubble flow, but in the previously favored cold dark matter model, the galaxy approaches, passes through
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The analysis

rails:sufficiency:partial_only:for=0+3p:against=0+0p | v55:multi_partial_one_side:lean=lean_partial:for:one_sided

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How Does Hubble's Expansion Affect Two Rope-Tied ...
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# How Does Hubble's Expansion Affect Two Rope-Tied Galaxies? Tags: cosmology, spacetime, space-expansion, galaxies, string - Score: 16 - Views: 1594 - Answers: 6 - Answered: yes - Asked by: EdP (169 rep) - Asked: 2011-01-16 - Edited: 2015-09-01 - Site: physics ## Question Suppose we have two galaxies that are sufficiently far apart so that the distance between them increases due to Hubble's expansion. If I were to connect these two galaxies with a rope, would there be tension in the rope? Would the tension increase with time? Is the origin of the tension some sort of drag between the expanding space and matter? ## Answers ### Answer by Ted Bunn (score: 12) The most interesting version of this question (I think) is this: Suppose that the rope has been attached long enough to bring the two galaxies to a stop relative to each other. (d[physical distance]/d[cosmic time] = 0). For subsequent times, does the rope need to maintain any tension to keep the galaxies from starting to accelerate away from each other? If we cut the rope, does the distance to the galaxies start to increase, decrease, or stay the same? The answer, it turns out, is that if the expansion of the Universe is
Can an infinitely long object fit in an expanding universe? | Publications of the Astronomical Society of Australia | Cambridge Core
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Can an infinitely long object fit in an expanding universe? | Publications of the Astronomical Society of Australia | Cambridge Core Cambridge Core homepage Search Cambridge Core homepage --- Institution Login Search Hostname: page-component-5db58dd55d-jhf8m Total loading time: 0 Render date: 2026-06-24T23:39:59.101Z Has data issue: false hasContentIssue false - English - Français # Can an infinitely long object fit in an expanding universe? Published online by Cambridge University Press: 20 August 2020 Aaron Glanville https://orcid.org/0000-0002-4316-6700 and Tamara M. Davis https://orcid.org/0000-0002-4213-8783 Show author details --- * Author for correspondence: Aaron Glanville, E-mail: a.glanville@uq.edu.au --- Article contents - Abstract - Introduction - The canvas of empty space - The tethered galaxy system - The ‘Hubble tether’ system - Discussion and Conclusion - Conversion from Milne to empty FLRW universe - Footnotes - References Save PDF Save PDF (0.75 mb) View PDF Save to Dropbox Save to Google Drive Save to Kindle Share Cite Rights & Permissions --- ## Abstract Does space stretch its contents as the universe expands? Usually, we say the answer
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This check searched the claim as stated. It did not run a separate search for evidence against it.
  1. Solutions to the tethered galaxy problem in an expanding universe and the observation of receding blueshifted objectsreferenceno side taken
  2. How Does Hubble's Expansion Affect Two Rope-Tied ...referenceno side taken
  3. Can an infinitely long object fit in an expanding universe? | Publications of the Astronomical Society of Australia | Cambridge Corereferenceno side taken
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