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The Sphere of You

Written 2026-06-15. Claims re-read against their sources on 2026-09-27: 17 checked, 7 confirmed, 10 wrong, 0 unverifiable. By claims-audit controls 2026-09-27 (audit agent + fix agent).

The audit (research/claims-audit/findings/r6.md) found nine faults; the fix agent re-read every source itself before editing. Primary sources fetched: arXiv 2104.14972 abstract page and TeX source (Reylé et al.), arXiv astro-ph/0310808 TeX (Davis & Lineweaver), arXiv 2104.01191 PDF (Ord), arXiv astro-ph/0107568 TeX (Loeb), atlasoftheuniverse.com/50lys.html, Wikipedia's Sirius infobox (parallax 378.9 mas), and the deposition archived in this repository. Horizon figures were recomputed by numerical integration of flat LCDM (H0=70, Om=0.3: event horizon 15.9 Gly, particle 46.2, Hubble 13.97, proper asymptote 16.7; Planck-like: 16.6, 46.2, 14.4, 17.4). Verifier before: research/sphere-of-you/verify.mjs 14/14 PASS, verify-page.mjs 15/15 PASS. After: 15/15 and 15/15.

Claims

• WRONG Reylé, Jahreiß, Scholz et al., "The 10 parsec sample in the Gaia era", A&A 650 A201 (2021)
  https://arxiv.org/abs/2104.14972 : authors are Reylé, Jardine, Fouqué, Caballero, Smart, Sozzetti; Jahreiß and Scholz are not authors
• WRONG dek: the gate corrected the deposition's "misread reachability fraction"; ground note: its "~3% of galaxies reachable (Loeb)" was corrected to ~5%
  research/sphere-of-you/deposition-as-received.txt : the deposition contains no "3%" and never names Loeb; it gives ~4% within reach by volume, which the page itself confirms
• WRONG event horizon "future limit ~17.6 Gly comoving" (slider caption; verifier asserted it grows toward it)
  https://arxiv.org/abs/astro-ph/0310808 : D&L: the event horizon "asymptotically approaches χ=0 as t→∞" in comoving coordinates; Ord: the affectable radius shrinks ~1 ly per year; ~17 Gly is a proper distance
• MINOR within 50 ly roughly 1,300 star systems (about 1,800 stars), per the Atlas of the Universe
  http://www.atlasoftheuniverse.com/50lys.html : "roughly 1400 star systems within this volume of space containing 2000 stars"
• MINOR Sirius 8.7 ly (and 8.71 in the ladder)
  https://en.wikipedia.org/wiki/Sirius : parallax 378.9 mas gives 8.61 ly
• MINOR D&L's Hubble sphere ~14.4 Gly with concordance H0≈70
  https://arxiv.org/abs/2104.01191 : c/H0 at 70 is 13.97 Gly; 14.4 is Ord's Planck-based figure
• MINOR the 10-pc paper is "the catalogue the RECONS consortium feeds"; live check "from the RECONS census"
  https://arxiv.org/abs/2104.14972 : Reylé et al. compile their own census from SIMBAD and Gaia EDR3 and cite RECONS's 2018 count (462 objects in 317 systems) as a separate figure
• MINOR 88 brown dwarfs within 10 pc
  https://arxiv.org/abs/2104.14972 : TeX: \NBDS = 85 "+3 candidates"; 375 + 85 + 77 + 3 = 540
• MINOR "a sphere between twenty and ninety light-years wide"
  research/sphere-of-you/deposition-as-received.txt : 20 to 90 ly is the radius (the deposition: "20 and 90 light-years out"); wide would be 40 to 180
• MINOR Loeb fixes the z≳1.8 threshold, the galaxies "currently crossing our event horizon" (quoted as Loeb's)
  https://arxiv.org/abs/astro-ph/0107568 : the phrase is Davis & Lineweaver's ("galaxies with redshift z∼1.8 are currently crossing our event horizon"); Loeb's text has no "crossing"
• CONFIRMED 540 objects in 339 systems within 10 pc, ~375 stars, 77 planets
  https://arxiv.org/abs/2104.14972 : abstract and TeX macros \NOBJ 540, \NSYS 339, \NSTARS 375, \NPLANETS 77
• CONFIRMED Ord: ~5% of observable galaxies ever reachable (17.5 billion of 400 billion); affectable 16.5 + observable 46.4 = 62.9 Gly
  https://arxiv.org/abs/2104.01191 : "Less than 5% of the galaxies we can currently observe could ever be affected"; 17.5 billion / 400 billion; 16.5, 46.4, 62.9 all in text
• CONFIRMED Loeb 2002 gives the z≳1.8 cutoff, not a percentage
  https://arxiv.org/abs/astro-ph/0107568 : "any light signal that we send out today will not be able to reach all sources with current redshifts z0≳1.8"
• CONFIRMED particle horizon ~46 Gly comoving
  https://arxiv.org/abs/astro-ph/0310808 : "about 46 Glyr, the current distance to the particle horizon"
• CONFIRMED ~133 naked-eye stars within 50 ly (mag < 6.5)
  http://www.atlasoftheuniverse.com/50lys.html : "There are 133 stars marked on this map"
• CONFIRMED present comoving event horizon ~16 Gly, so ~4% of the observable volume reachable, ~96% not
  https://arxiv.org/abs/2104.01191 : Ord 16.5 / 46.4 gives 4.5%; own integration for H0=70 gives 15.9 / 46.2 = 4.1%
• CONFIRMED the deposition wrote "0.14 stars/ly³" and "360 known stellar systems within 83 light-years"
  research/sphere-of-you/deposition-as-received.txt : both present verbatim in the Apparatus section

What was done

• [fixed] Reylé et al. author list corrected on the page source list, facts.md and verify.mjs comment; dated correction line added to the page's Sources
• [fixed] dek and ground note no longer credit a "misread reachability fraction" or "~3% (Loeb)" to the deposition; the second correction is now the star count set at the wrong radius (matching the page's provenance box); facts.md and verify.mjs output carry a dated withdrawal
• [fixed] slider caption and Apparatus now say the comoving event horizon only shrinks and ~17 Gly is a proper distance; verify.mjs no longer asserts the horizon grows to 17.6, and instead computes the proper asymptote c/H_Lambda = 16.7 Gly
• [fixed] 50-ly counts now ~1,400 systems / ~2,000 stars (page, ground note, facts.md, verify.mjs output)
• [fixed] Sirius 8.6 ly in the source line and 8.60 in the ladder
• [fixed] Hubble sphere given as ~14 Gly at H0=70 with 14.4 attributed to Ord's Planck figures (page, facts.md); verify.mjs now computes 13.97
• [fixed] RECONS wording: the paper is an independent compilation that cites RECONS; live-check header and check label now say the Gaia-era 10-pc census
• [fixed] 88 brown dwarfs changed to 85 plus 3 candidates (page, facts.md, verify.mjs comment)
• [fixed] "twenty and ninety light-years wide" now "in radius"
• [fixed] "currently crossing our event horizon" now attributed to Davis & Lineweaver, not Loeb (found by the fix agent)
• [fixed] facts.md called Loeb's 4.4 c/H0 the asymptotic event horizon; in Loeb it is the asymptotic comoving distance of the last-scattering surface (found by the fix agent)