A sun-like star that's normal in visible light but ~60x brighter in deep infrared
fofrAI · x · 2026-10-25
With AI assistance, fofrAI flagged an odd star, Gaia DR3 4582145718700356096 — a sun-like star 965 light-years away in Hercules. It looks perfectly normal in visible light, but in March 2010 NASA's WISE telescope caught it 60x brighter than expected at 22 microns (5-7x at 12 microns). Spectral fitting suggests a 190 K heat source at roughly Mars distance (1.8 AU) intercepting 1.3% of the star's light and re-radiating it as heat. Candidate explanations: a huge debris cloud from a major planetary collision, a radio-silent galaxy behind it — or, with a tiny chance, a technosignature. No observations at that wavelength since; more data needed.
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