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Researchers have obtained the deepest images ever taken of IC 1101, allowing them to identify the galaxy's outer edge for the first time. The observations confirm it as the largest known galaxy, spanning roughly 520 kiloparsecs, or about 1.7 million light-years, and containing an estimated 3.4 trillion solar masses in stars. The paper was posted to the arXiv preprint server on July 16.
Indexed and credited by AIPROPX. Originating outlet: Phys.org. Open at source →
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AIPROPX has consolidated 1 report from 1 outlet into a single canonical entry on “Astronomers finally measure the full size of the largest known galaxy.” Every covered outlet is based in Other.
The only timestamped report came from Phys.org (Jul 31, 2026, 12:40 UTC).
Comparing the wording across sources, the phrase recurring most across the coverage is “largest known galaxy”.
2 statements are carried by only one outlet within this set and are not echoed by the others.
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Generated by AIPROPX from the source counts above. AIPROPX indexes and resolves coverage; the original publishers are credited and linked at origin in every report.
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AIPROPX — “Astronomers finally measure the full size of the largest known galaxy” · https://www.aipropx.com/story/58afb1b362c3b257be190c9aa3f0226e
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