{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"31345f0ffd17639d76a103f857eb6928b6b804749570e16ef97bbf947e0a11bc","created":"2026-10-03T07:17:51Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"23b63c676b722ae8a67fe087b6d702cf875ee42f0d9d3b48d5577728ffde83a9","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"cosmo.hubble-tension","field":"cosmo","n":"1","review_cite":"Di Valentino E. et al., In the realm of the Hubble tension: a review of solutions, Classical and Quantum Gravity, 2021","review_link":"https://arxiv.org/abs/2103.01183","review_verified":"true","summary":"The present expansion rate of the universe, the Hubble constant, comes out about 8 percent higher from nearby stars and supernovae than from the cosmic microwave background (the leftover glow of the early universe) interpreted with the standard model. The two values disagree by more than five times their combined uncertainty.","title":"Hubble tension between early and late universe","topic_ref":null,"why":"Either the standard cosmological model misses physics or a widely used distance method has a hidden error, and either outcome changes how cosmology measures the universe."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"7274d4f6495a643569c4fecb6957a3a928df8172b93a2b26d1dc5043075bd891","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"621a979c32228e6fe199afe78b93a4f884ddd4aff6cdd33cdffc5e7d4555c370","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"JDVKrDKE4xB3LXMsaJTc8CWySoepPIHYii8xcKb-4v-ZdLFWB77jBQakQLA6m54fKFjvoTO5L0ig4cINEYIIAw"},"schema":"pubphys.envelope/1"},"record_hash":"7274d4f6495a643569c4fecb6957a3a928df8172b93a2b26d1dc5043075bd891","leaf_index":188}