{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"a6770c409f6a669739fa872de08cfae4f5c1b511a6c64957b8613e4a1a50b98c","created":"2026-10-03T07:17:50Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"427d0358197030b8793bda326c14d0bac58dc79a0934e1cc5b17be32fe99fd66","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"astro.star-cluster-formation","field":"astro","n":"1","review_cite":"A. Adamo, P. Zeidler, J. M. D. Kruijssen, M. Chevance, M. Gieles, D. Calzetti, C. Charbonnel, H. Zinnecker, M. G. H. Krause, Star Clusters Near and Far, Space Science Reviews, 2020","review_link":"https://doi.org/10.1007/s11214-020-00690-x","review_verified":"true","summary":"Massive star clusters pack up to millions of stars born at nearly the same time in a small region. How the oldest of them, the globular clusters, formed, and why their stars differ in chemistry and spin, are still open.","title":"Formation of massive star clusters","topic_ref":null,"why":"Globular clusters are among the oldest objects in the universe and record how the first galaxies formed stars."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"862121835e7a689a669676da2a36348dc86da0303897339b1fb2adfb71cb88af","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"380bd5b8d3f382965612622a3d71b067a27dcefa54c2acdc2e215a12a0fa0f36","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"ZXuheSgg3W4pYC20J0CoGD0i2LS9y411R9L8zkQXW4M8lOYDCxo61JEwylwv31h78PUYKDWGJPdAGvOosGJuAQ"},"schema":"pubphys.envelope/1"},"record_hash":"862121835e7a689a669676da2a36348dc86da0303897339b1fb2adfb71cb88af","leaf_index":55}