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Tag: Comets

Interstellar Comet 3I/ATLAS: Origin, Trajectory and Scientific Stakes In 2025’s Third‑Ever Extrasolar Visitor

Key take‑aways (one‑paragraph executive summary) In early July 2025 astronomers using the NASA‑funded ATLAS telescope in Chile discovered a hyper‑fast object now designated 3I/ATLAS (C/2025 N1)—only the third confirmed interstellar body to enter our Solar System after ’Oumuamua (2017) and Borisov (2019). Follow‑up astrometry shows an inbound velocity of ≈58 km s⁻¹ and an orbital eccentricity of ≈6.1, values far in…
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