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NASA Releases Multi-Mission Images of Interstellar 3I/ATLAS, Confirms It Is a Comet

NASA calls 3I/ATLAS a comet based on images gathered across the Solar System in September and October.

Overview

  • The agency published a Nov. 19 set of images from more than a dozen instruments after a public release delay attributed to the U.S. government shutdown.
  • Mars Reconnaissance Orbiter obtained the closest, most detailed views as the object passed about 30 million kilometers from Mars in early October, with MAVEN ultraviolet data and a Perseverance sighting.
  • Solar observatories STEREO, SOHO and the newly launched PUNCH tracked the object near the Sun and recorded its tail between mid-September and late October.
  • Asteroid missions Psyche and Lucy photographed the visitor in mid-September from roughly 53 million kilometers and 380 million kilometers, aiding trajectory refinement.
  • The rare interstellar comet is projected to make its nearest approach to Earth on Dec. 19 at about 270 million kilometers, with continued monitoring planned.