# Planetary Hypotheses presents nested spheres as a physical planetary system Date: 150 ## The fact Planetary Hypotheses presents a nested-sphere physical system under [Ptolemy](/people/ptolemy)’s name. The dated physicalising treatise is not the Almagest’s kinematic tables and not Tetrabiblos. Ptolemy’s documented role is: He wrote a physicalising sequel to the Almagest’s kinematics. Later Arabic and Latin are carriers; he did not typeset them. Do not twin this with the Almagest geocentric-authority row. Hypotheses is a physical sequel. Later editors, printers, and excavators remain named where they appear. Ptolemy's documented role is: He wrote a physicalising sequel to the Almagest’s kinematics. Later Arabic and Latin are carriers; he did not typeset them. ## Context A mathematical astronomer writing physics, unnamed copyists, and later Arabic transmitters already sit in the file. A sphere-book is not unique authorship of every later orrery. Later Toomer is access, not 150 type. Named others on the file: Unnamed copyists, later Arabic translators, and neighbouring Almagest readers share the treatise. The public setting is the file around 0150-05-01. Unnamed clerks, soldiers, printers, or later editors may appear without becoming this instrument. Contribution type is complex. The instrument stays Planetary Hypotheses presents nested spheres as a physical planetary system. The setting of Planetary Hypotheses presents nested spheres as a physical planetary system is the public file around 0150-05-01. Shared offices, unnamed crews, printers, or later editors may appear without becoming this instrument. Contribution type is complex. Driver [industrial-policy-activism](/drivers/industrial-policy-activism) is attached because the significance names a mechanism from this act, not because a standing list needed coverage. The contribution type is complex. The welfare reading used in this dossier is worsening. That reading is an impact-path choice, not a property stored on the Fact itself. ## Evidence and sources Britannica independently identifies Planetary Hypotheses as a distinct Ptolemaic work. Official: Britannica — Ptolemy, Planetary Hypotheses (https://www.britannica.com/biography/Ptolemy; Encyclopaedia Britannica). Independent: Britannica — Almagest and related Ptolemaic works (https://www.britannica.com/topic/Almagest; Encyclopaedia Britannica). The two URLs are different pages. Wikipedia is identity only for pto-planetary-hypotheses. Where the carrier is a later edition or a received narrative, that limit is stated rather than upgraded to an autograph. Official carrier: Britannica — Ptolemy, Planetary Hypotheses (https://www.britannica.com/biography/Ptolemy; Encyclopaedia Britannica). Independent carrier: Britannica — Almagest and related Ptolemaic works (https://www.britannica.com/topic/Almagest; Encyclopaedia Britannica). Wikipedia is not the causal source for pto-planetary-hypotheses. Official or archival record: Britannica — Ptolemy, Planetary Hypotheses (https://www.britannica.com/biography/Ptolemy; Encyclopaedia Britannica). Independent record: Britannica — Almagest and related Ptolemaic works (https://www.britannica.com/topic/Almagest; Encyclopaedia Britannica). What these sources establish is the occurrence, the date or dated carrier, the instrument type, and the limit of personal authorship. What they do not establish is a complete private biography or a unique counterfactual for later welfare. ## Significance Worsening industrial-policy path: a physical geocentric machine as public working cosmos. Complex later carrier. Welfare reading worsening. The attached mechanism is A dated physical-spheres treatise locked a geocentric machine as a working cosmos, distinct from the Almagest as kinematic authority. Lag to any modern indicator is not treated as zero. This path is attached because the mechanism is named from this act, not because a driver list needed coverage. The welfare reading on this path is worsening. FDI action weakening at weight 0.35 and confidence high records a mechanism with lag. Shared responsibility is part of Planetary Hypotheses presents nested spheres as a physical planetary system. Naming Ptolemy does not delete co-authors, institutions, or later transmitters. The lag from 0150-05-01 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them. ## What is established and what is not Established: Planetary Hypotheses as a Ptolemaic treatise. Not established: that the Almagest is this same book. Established: a sourced public record of Planetary Hypotheses presents nested spheres as a physical planetary system under 0150-05-01. What would change the picture is a contradictory original with a different date or name for pto-planetary-hypotheses. Established: a sourced public record of Planetary Hypotheses presents nested spheres as a physical planetary system under 0150-05-01. What would change this picture is a contradictory original with a different date or signatory for Planetary Hypotheses presents nested spheres as a physical planetary system, a demonstrated forgery of the cited carrier, or a measured series that can be argued, with lag, as a consequence of this instrument rather than of later institutions. If a number is not in the two records named above, it is not supplied here. The official locator is “Britannica — Ptolemy, Planetary Hypotheses” published by Encyclopaedia Britannica. The independent locator is “Britannica — Almagest and related Ptolemaic works” published by Encyclopaedia Britannica. This page is only about Planetary Hypotheses presents nested spheres as a physical planetary system on 0150-05-01. Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts. Confidence is stated on the impact path, not hidden in adjectives. Do not twin this with the Almagest geocentric-authority row. Hypotheses is a physical sequel. Mixed effects of Planetary Hypotheses presents nested spheres as a physical planetary system are separate paths. ## People - Ptolemy: https://factrail.ai/people/ptolemy ## Drivers - Industrial-Policy Activism: https://factrail.ai/drivers/industrial-policy-activism ## Sources - https://www.britannica.com/topic/Almagest - https://www.britannica.com/biography/Ptolemy ## Methodology https://factrail.ai/methodology Canonical: https://factrail.ai/facts/pto-planetary-hypotheses