
When 3I/ATLAS blazed into view this summer, astronomers and sky-watchers alike were captivated. Reports erupted across social media and news outlets claiming the interstellar object had dramatically changed colours mid-flight—allegedly shifting from fiery red to ghostly green as it swung past the Sun.
But according to NASA-linked scientists, the spectacle may have been more illusion than transformation. A new analysis is cutting through the noise, revealing a much simpler—yet no less fascinating—explanation for the world's latest celestial visitor.