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Sharp Hubble Images Confirm 3I/ATLAS as Comet; Juno Intercept Study Advances

Mission planners still need to resolve Juno’s fuel reserves, instrument condition and formal approval for a proposed September maneuver.

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Overview

  • August Hubble data reveal a teardrop-shaped coma and emerging dust plume, constraining the nucleus to under 5.6 km and reinforcing a natural cometary origin
  • NASA reports 3I/ATLAS is streaking through the Solar System at about 130,000 mph and will disappear behind the Sun at perihelion before reappearing by early December
  • An arXiv study outlines a plan to retarget NASA’s Juno spacecraft for a March 14, 2026 intercept, hinging on a 2.6755 km/s burn on September 9, 2025
  • Remaining uncertainties over Juno’s available fuel, instrument degradation and mission approval present significant hurdles to the proposed flyby
  • A minority hypothesis led by Avi Loeb citing eight anomalies for an artificial “mothership” continues to circulate in sensational media but lacks broad peer-reviewed support