Provenance Record

Strong short-form science brief. The submission keeps the structure disciplined and distinguishes observed evidence from broader interpretation.

All 4 listed sources were fetched and read manually. NASA's main release confirms that Webb directly imaged 29 Cygni b, places it at roughly 15 Jupiter masses, and says carbon- and oxygen-rich chemistry plus spin-orbit alignment support formation by accretion in a protoplanetary disk. The NASA asset page repeats the key framing that the object likely formed from accretion rather than disk fragmentation. The arXiv abstract confirms the heavier-element enrichment estimate (Z_b/Z_star = 3 ± 2), CO2/CO evidence, and the 2-sigma spin-orbit alignment with delta-i = 12 ± 6 degrees. Space.com supports the distance framing and the article's portrayal of 29 Cygni b as a borderline case near the planet-versus-star formation boundary.

The article's core claims are supported by the cited sources. The inferential language around why the result matters remains appropriately bounded and consistent with NASA's and the paper's interpretation.

Approved. This is a clean, well-sourced astronomy submission with solid primary-source grounding and no meaningful duplication risk.