Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T15:22:41.622758Z
Paper Citation Record · LEDGER
Upper limit on the fraction of alien civilizations that develop communication technology
As of 22 August 2026, this Paper Citation Record lists 53 of 53 outbound references and 0 inbound Pith citation observations for arXiv:1908.01335.
A citation records a reference. It does not transfer a finding from one paper to another.
Coverage vector
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-22T06:32:14.747728+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links
A source-named dated measurement, never combined with another source.
Source: cited_works
Reference resolution
53 of 53 outbound references displayed
- verified exact20
- verified fuzzy2
- unresolved21
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External citation measurements
No source-named external measurement is stored.
Outbound references
Observation d305fcb1-66e5-40d7-b0fe-8ecb644db77b · outbound
This paper cites Cosmic Modesty.
Upper limit on the fraction of alien civilizations that develop communication technology Cosmic Modesty
Reference 1
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:42.542066Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 4b2a89b2-f400-4667-b616-8d3e10e02aa5 · outbound
This paper cites Sagan, The cosmic connection, (Anchor Press, 1973).
Upper limit on the fraction of alien civilizations that develop communication technology Sagan, The cosmic connection, (Anchor Press, 1973)
Reference 2
- Resolution
- verified fuzzy
- raw_fallback, observed 2026-08-14T15:22:42.611217Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 30f670b8-2bc8-4cd9-bf10-28b42d08c133 · outbound
This paper cites an unresolved cited work.
Upper limit on the fraction of alien civilizations that develop communication technology Unresolved cited work
Reference 3
- Resolution
- unresolved
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Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 60aa0e7b-c728-4110-82d0-921710836c4c · outbound
This paper cites A joint analysis of the Drake equation and the Fermi paradox.
Upper limit on the fraction of alien civilizations that develop communication technology A joint analysis of the Drake equation and the Fermi paradox
Reference 4
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:42.528850Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 270c7880-bd93-410d-b9c3-99101bbb7de9 · outbound
This paper cites Is there anybody out there?.
Upper limit on the fraction of alien civilizations that develop communication technology Is there anybody out there?
Reference 5
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:42.512797Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation bb816c1e-d6be-4c66-b28f-3e307e088d50 · outbound
This paper cites Albedos, Equilibrium Temperatures, and Surface Temperatures of Habitable Planets.
Upper limit on the fraction of alien civilizations that develop communication technology Albedos, Equilibrium Temperatures, and Surface Temperatures of Habitable Planets
Reference 6
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.435865Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 158546ba-0f9a-4512-8b25-687ca33efbbb · outbound
This paper cites On the Habitability of Our Universe.
Upper limit on the fraction of alien civilizations that develop communication technology On the Habitability of Our Universe
Reference 7
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:42.487661Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation e3dd01b4-d58a-48ca-a6bb-c2c4c3b2bb06 · outbound
This paper cites Seager, Exoplanet habitability, Science, 340, 577 (2013) doi: 10.1126/science.1232226.
Upper limit on the fraction of alien civilizations that develop communication technology Seager, Exoplanet habitability, Science, 340, 577 (2013) doi: 10.1126/science.1232226
Reference 8
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.444566Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation bc33eb49-3768-44da-9242-a275ea9bcc09 · outbound
This paper cites an unresolved cited work.
Upper limit on the fraction of alien civilizations that develop communication technology Unresolved cited work
Reference 9
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.448168Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation e7b1e30a-02f0-440b-b0ca-50c7962160a4 · outbound
This paper cites Characteristics of planetary candidates observed by Kepler, II: Analysis of the first four months of data.
Upper limit on the fraction of alien civilizations that develop communication technology Characteristics of planetary candidates observed by Kepler, II: Analysis of the first four months of data
Reference 10
- Resolution
- unresolved
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Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 533a9fd4-168a-42d1-a672-8049b59623a3 · outbound
This paper cites Planetary Candidates Observed by Kepler, III: Analysis of the First 16 Months of Data.
Upper limit on the fraction of alien civilizations that develop communication technology Planetary Candidates Observed by Kepler, III: Analysis of the First 16 Months of Data
Reference 11
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.456851Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 061b1844-209f-41d0-9527-93e5b31c3d77 · outbound
This paper cites The Occurrence Rate of Small Planets around Small Stars.
Upper limit on the fraction of alien civilizations that develop communication technology The Occurrence Rate of Small Planets around Small Stars
Reference 12
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.460561Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 41812b75-52b1-4b7f-87da-1dc63c704047 · outbound
This paper cites A revised estimate of the occurrence rate of terrestrial planets in the habitable zones around kepler m-dwarfs.
Upper limit on the fraction of alien civilizations that develop communication technology A revised estimate of the occurrence rate of terrestrial planets in the habitable zones around kepler m-dwarfs
Reference 13
- Resolution
- malformed identifier
- no resolver link, observed 2026-08-14T15:22:41.464264Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 56dee30f-83f5-447b-aaf6-3f307ed44c51 · outbound
This paper cites Subsurface Exolife.
Upper limit on the fraction of alien civilizations that develop communication technology Subsurface Exolife
Reference 14
- Resolution
- malformed identifier
- local_arxiv, observed 2026-08-14T15:22:42.434888Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation e80bbf73-9a51-4b2d-a850-008929cca801 · outbound
This paper cites an unresolved cited work.
Upper limit on the fraction of alien civilizations that develop communication technology Unresolved cited work
Reference 15
- Resolution
- unresolved
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Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation ad60575e-e32e-465a-a0de-729ebbb05e6e · outbound
This paper cites an unresolved cited work.
Upper limit on the fraction of alien civilizations that develop communication technology Unresolved cited work
Reference 16
- Resolution
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Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation ae759a0e-9ae8-42de-996e-e6cd3908e0c5 · outbound
This paper cites Schulze-Makuch and L.
Upper limit on the fraction of alien civilizations that develop communication technology Schulze-Makuch and L
Reference 17
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.480797Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation e77fd9a8-df33-4170-a07a-7a08f0405079 · outbound
This paper cites Bains, Many chemistries could be used to build living systems, Astrobiology 4, 137 (2004) doi:10.1089/153110704323175124.
Upper limit on the fraction of alien civilizations that develop communication technology Bains, Many chemistries could be used to build living systems, Astrobiology 4, 137 (2004) doi:10.1089/153110704323175124
Reference 18
- Resolution
- verified exact
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Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation aca7f93d-5101-4311-b93c-5daed5113cb6 · outbound
This paper cites West, Multiple bonds to silicon: 20 years later, Polyhe- dron 21, 467 (2002) doi: 10.1016/S0277-5387(01)01017-8.
Upper limit on the fraction of alien civilizations that develop communication technology West, Multiple bonds to silicon: 20 years later, Polyhe- dron 21, 467 (2002) doi: 10.1016/S0277-5387(01)01017-8
Reference 19
- Resolution
- verified exact
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Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 7a754f93-9db7-4991-b499-0b227530a759 · outbound
This paper cites Lickiss, The synthesis and structures of organosilanols Adv.
Upper limit on the fraction of alien civilizations that develop communication technology Lickiss, The synthesis and structures of organosilanols Adv
Reference 20
- Resolution
- verified fuzzy
- raw_fallback, observed 2026-08-14T15:22:42.566022Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 56f87412-c79c-4e2f-b2d1-84414cc43977 · outbound
This paper cites Okazaki, T.
Upper limit on the fraction of alien civilizations that develop communication technology Okazaki, T
Reference 21
- Resolution
- verified exact
- doi, observed 2026-08-14T15:22:41.677930Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation c175b8a8-21b3-4205-b602-a928aad102cf · outbound
This paper cites an unresolved cited work.
Upper limit on the fraction of alien civilizations that develop communication technology Unresolved cited work
Reference 22
- Resolution
- unresolved
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Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 50a6b582-7a5a-4c59-8d10-309352a5d604 · outbound
This paper cites an unresolved cited work.
Upper limit on the fraction of alien civilizations that develop communication technology Unresolved cited work
Reference 23
- Resolution
- verified exact
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Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation fefa1f5d-2d6c-46ec-8b19-ca57f3942d4b · outbound
This paper cites an unresolved cited work.
Upper limit on the fraction of alien civilizations that develop communication technology Unresolved cited work
Reference 24
- Resolution
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Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 22e0510b-8331-4b51-bfeb-34abac96bcc1 · outbound
This paper cites Galactic Stellar and Substellar Initial Mass Function.
Upper limit on the fraction of alien civilizations that develop communication technology Galactic Stellar and Substellar Initial Mass Function
Reference 25
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.509591Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation dd26a4b7-e787-45c0-ad6a-5272cfda548d · outbound
This paper cites A comprehensive comparison of the Sun to other stars: searching for self-selection effects.
Upper limit on the fraction of alien civilizations that develop communication technology A comprehensive comparison of the Sun to other stars: searching for self-selection effects
Reference 26
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:42.280974Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 1f70d0c9-5a83-495c-9b31-bf964c77b89d · outbound
This paper cites an unresolved cited work.
Upper limit on the fraction of alien civilizations that develop communication technology Unresolved cited work
Reference 27
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.517691Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 1ccd5305-c20c-42e1-836b-9f5c14caebcf · outbound
This paper cites A Dying Universe: The Long Term Fate and Evolution of Astrophysical Objects.
Upper limit on the fraction of alien civilizations that develop communication technology A Dying Universe: The Long Term Fate and Evolution of Astrophysical Objects
Reference 28
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:42.199984Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation d2cd189c-515b-4f1c-af8e-446e1366d995 · outbound
This paper cites Relative Likelihood for Life as a Function of Cosmic Time.
Upper limit on the fraction of alien civilizations that develop communication technology Relative Likelihood for Life as a Function of Cosmic Time
Reference 29
- Resolution
- malformed identifier
- local_arxiv, observed 2026-08-14T15:22:42.181710Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 1b86889e-93f0-45a3-8040-a8d3f4cd3319 · outbound
This paper cites Fujii, D.
Upper limit on the fraction of alien civilizations that develop communication technology Fujii, D
Reference 30
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.529111Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 5fa1f7ef-551b-4a11-b4fa-815083f9cb4f · outbound
This paper cites Physical constraints for the evolution of life on exoplanets.
Upper limit on the fraction of alien civilizations that develop communication technology Physical constraints for the evolution of life on exoplanets
Reference 31
- Resolution
- malformed identifier
- local_arxiv, observed 2026-08-14T15:22:42.011472Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation db85434f-e362-4c1e-ab11-296c98378e52 · outbound
This paper cites Stellar parameters for TRAPPIST-1.
Upper limit on the fraction of alien civilizations that develop communication technology Stellar parameters for TRAPPIST-1
Reference 32
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:41.994314Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation b4e79528-acfa-4502-950d-7bee1cb38db6 · outbound
This paper cites Improved Estimates of the Milky Way's Stellar Mass and Star Formation Rate from Hierarchical Bayesian Meta-Analysis.
Upper limit on the fraction of alien civilizations that develop communication technology Improved Estimates of the Milky Way's Stellar Mass and Star Formation Rate from Hierarchical Bayesian Meta-Analysis
Reference 33
- Resolution
- unresolved
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Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 2f2e6079-9424-4bea-b1a0-7fde0ae9d5d7 · outbound
This paper cites Toward a Unification of Star Formation Rate Determinations in the Milky Way and Other Galaxies.
Upper limit on the fraction of alien civilizations that develop communication technology Toward a Unification of Star Formation Rate Determinations in the Milky Way and Other Galaxies
Reference 34
- Resolution
- malformed identifier
- no resolver link, observed 2026-08-14T15:22:41.543371Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 2a45b6bc-ac22-44af-8290-d8b4ebebe811 · outbound
This paper cites The Initial Mass Function of Stars: Evidence for Uniformity in Variable Systems.
Upper limit on the fraction of alien civilizations that develop communication technology The Initial Mass Function of Stars: Evidence for Uniformity in Variable Systems
Reference 35
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.547468Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation ff1e7bae-4ebb-4122-93a6-283dad9995f7 · outbound
This paper cites Galactic-Field IMFs of Massive Stars.
Upper limit on the fraction of alien civilizations that develop communication technology Galactic-Field IMFs of Massive Stars
Reference 36
- Resolution
- malformed identifier
- no resolver link, observed 2026-08-14T15:22:41.551055Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 9b642b84-e477-40ae-acee-b76d870c7697 · outbound
This paper cites Star Formation in the Local Milky Way.
Upper limit on the fraction of alien civilizations that develop communication technology Star Formation in the Local Milky Way
Reference 37
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:41.932604Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 6905f183-b771-458a-9817-34986a97840c · outbound
This paper cites Star Formation in the Milky Way and Nearby Galaxies.
Upper limit on the fraction of alien civilizations that develop communication technology Star Formation in the Milky Way and Nearby Galaxies
Reference 38
- Resolution
- malformed identifier
- no resolver link, observed 2026-08-14T15:22:41.560006Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation d4e610c3-e1c9-4e80-b2ee-852ac6b0226d · outbound
This paper cites an unresolved cited work.
Upper limit on the fraction of alien civilizations that develop communication technology Unresolved cited work
Reference 39
- Resolution
- unresolved
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Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation fd96599c-51a2-48da-ab56-02bae6fbe5e9 · outbound
This paper cites Terrestrial Implications of Cosmological Gamma-Ray Burst Models.
Upper limit on the fraction of alien civilizations that develop communication technology Terrestrial Implications of Cosmological Gamma-Ray Burst Models
Reference 40
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:41.905992Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation cd9a6f09-eae4-49d4-a741-d3b2d89c7980 · outbound
This paper cites Life Extinctions By Cosmic Ray Bursts.
Upper limit on the fraction of alien civilizations that develop communication technology Life Extinctions By Cosmic Ray Bursts
Reference 41
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:41.889636Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation c077c3bf-835f-4ea0-aaf9-1ff5d7f94579 · outbound
This paper cites Terrestrial Ozone Depletion Due to a Milky Way Gamma-Ray Burst.
Upper limit on the fraction of alien civilizations that develop communication technology Terrestrial Ozone Depletion Due to a Milky Way Gamma-Ray Burst
Reference 42
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:41.874265Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation c12c1316-af8c-406d-9bb4-e51809fb86e7 · outbound
This paper cites Gamma-Ray Bursts and the Earth: Exploration of Atmospheric, Biological, Climatic and Biogeochemical Effects.
Upper limit on the fraction of alien civilizations that develop communication technology Gamma-Ray Bursts and the Earth: Exploration of Atmospheric, Biological, Climatic and Biogeochemical Effects
Reference 43
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:41.858070Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation d59422ba-1fe7-4f5c-99a8-2751d6970f86 · outbound
This paper cites Did a gamma-ray burst initiate the late Ordovician mass extinction?.
Upper limit on the fraction of alien civilizations that develop communication technology Did a gamma-ray burst initiate the late Ordovician mass extinction?
Reference 44
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:41.843705Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation ad16f526-a64b-48b3-a4a2-a4502c8c4abd · outbound
This paper cites On the role of GRBs on life extinction in the Universe.
Upper limit on the fraction of alien civilizations that develop communication technology On the role of GRBs on life extinction in the Universe
Reference 45
- Resolution
- malformed identifier
- local_arxiv, observed 2026-08-14T15:22:41.828273Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation bacbb029-718b-4dda-bd68-34a607a638e0 · outbound
This paper cites an unresolved cited work.
Upper limit on the fraction of alien civilizations that develop communication technology Unresolved cited work
Reference 46
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.594071Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation a6f1c237-bea4-45ee-b19d-ad32206c6988 · outbound
This paper cites an unresolved cited work.
Upper limit on the fraction of alien civilizations that develop communication technology Unresolved cited work
Reference 47
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.597671Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation ddbc5bd5-b44a-4b9a-b41a-dda5af431865 · outbound
This paper cites Galactic Neutrino Communication.
Upper limit on the fraction of alien civilizations that develop communication technology Galactic Neutrino Communication
Reference 48
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:41.809800Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation b842f634-c0a5-413a-b3cf-13dbbe44cd49 · outbound
This paper cites A Unified Approach to the Classical Statistical Analysis of Small Signals.
Upper limit on the fraction of alien civilizations that develop communication technology A Unified Approach to the Classical Statistical Analysis of Small Signals
Reference 49
- Resolution
- malformed identifier
- no resolver link, observed 2026-08-14T15:22:41.605335Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 7034390f-0bae-477b-a7b2-9752d242d96d · outbound
This paper cites The Breakthrough Listen Search for Intelligent Life: Target Selection of Nearby Stars and Galaxies.
Upper limit on the fraction of alien civilizations that develop communication technology The Breakthrough Listen Search for Intelligent Life: Target Selection of Nearby Stars and Galaxies
Reference 50
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:41.782980Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 2464e069-5c71-4368-8e55-2dd992400d59 · outbound
This paper cites The Breakthrough Listen Search for Intelligent Life: Searching Boyajian's Star for Laser Line Emission.
Upper limit on the fraction of alien civilizations that develop communication technology The Breakthrough Listen Search for Intelligent Life: Searching Boyajian's Star for Laser Line Emission
Reference 51
- Resolution
- verified exact
- local_arxiv, observed 2026-08-14T15:22:41.765373Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.
Observation 27fd1ffb-e660-4bc8-808c-94c1bbf6f3a0 · outbound
This paper cites The Breakthrough Listen Search for Extraterrestrial Intelligence.
Upper limit on the fraction of alien civilizations that develop communication technology The Breakthrough Listen Search for Extraterrestrial Intelligence
Reference 52
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.618676Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 79f228d6-4004-434b-b9e2-1a05bed05e33 · outbound
This paper cites Searching the Moon for Extrasolar Material and the Building Blocks of Extraterrestrial Life.
Upper limit on the fraction of alien civilizations that develop communication technology Searching the Moon for Extrasolar Material and the Building Blocks of Extraterrestrial Life
Reference 53
- Resolution
- unresolved
- no resolver link, observed 2026-08-14T15:22:41.622758Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Pith citing papers
No inbound Pith citation observations are available.