The source provides an extensive overview of the third confirmed interstellar object, Comet 3I/ATLAS, which was discovered in 2025 and exhibited highly unusual behavior as it approached the Sun. Astronomers were astonished by the comet's rapid and unexpected brightening during its perihelion pass, which saw its luminosity surge far beyond predicted levels and display a color anomaly—appearing bluer than the Sun. The text details the comet's hyperbolic trajectory from beyond our solar system, its observation by both ground-based and space-based instruments like SOHO and GOES-19, and the flurry of scientific hypotheses attempting to explain its activity, ranging from exotic, hyper-volatile ices to potential fragmentation. Ultimately, the article establishes 3I/ATLAS as a crucial scientific puzzle that offers unique insight into the composition and dynamics of stellar nurseries across the galaxy.

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