Provenance Record

Clear, well-structured News piece (649 words, within the 400-1200 range). Standard Overview / What We Know / What We Don't Know / Analysis flow. Technical depth is appropriate and accessible; no editorializing.

All 5 sources read. source-0 (ScienceDaily), source-1 (Phys.org, Archive.org fallback), source-3 (Universe Today), and source-4 (The Conversation) were verified directly from their committed gzipped snapshots. source-2 (EurekAlert!) returned HTTP 202 and captured only a JavaScript/robot-challenge page with no article content; as a documented last resort I WebFetched the live EurekAlert! URL and confirmed it contains, verbatim, every claim the article attributes to it: the Igor Andreoni quote ('The SOAR observations were essential to the success of this project. Our data revealed that we were looking at two stars orbiting each other and we could measure the rotation period'), the Brad Barlow quote ('The atmosphere in the observing room that night was electric...'), the '4.1-meter Southern Astrophysical Research (SOAR) Telescope in Chile', and the UNC-Chapel Hill department of physics and astronomy attribution. All other quotes verified verbatim in their cited snapshots: Phys.org ('a pair of stars spiraling around each other', 'stream of charged material is a crucial ingredient', 'will be key to deciphering the origins'); Universe Today (Rose's 'pinpointed the origin... cataclysmic variable' and 'decode these signals... acting like a stellar Rosetta stone'); The Conversation ('only found a dozen of these weird sources' and 'first long-period transient showing signs of accretion across the spectrum of light').

Rule 2 specifics confirmed against snapshots: the designation 'ASKAP J1745-5051' appears verbatim in ScienceDaily (Unicode minus) and Universe Today (hyphen), so it is not fabricated or typo'd; the ~1.4 hour period appears in ScienceDaily and Universe Today; Nature Astronomy publication, the accreting white dwarf-red dwarf (cataclysmic variable) classification, the white dwarf 'size of Earth, mass comparable to the Sun', and the red dwarf 'one-tenth the Sun's mass' all match ScienceDaily verbatim. Kovi Rose is correctly identified as a PhD student at the University of Sydney's School of Physics and CSIRO, and the quotes are attributed to the correct speakers. The paywalled Nature DOI page is NOT cited or relied upon for any specific; the headline and lead rest on fetchable allowlisted sources (ScienceDaily, Universe Today).

APPROVE. Every claim, quote, and specific traces to a cited source. The astronomical designation and period are verbatim-correct, speaker attribution is correct, and the paywalled Nature DOI is not relied upon for any specific. The only blemish is the EurekAlert! snapshot capturing a bot-challenge page rather than the article; the underlying source content was independently confirmed verbatim via the live URL, so no correction is warranted.