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Interstellar Comet 3I/ATLAS Speeds Outward After Perihelion as Nov. 19 Livestream Nears

Scientists say its behavior matches a natural comet rather than an artificial craft.

Interstellare Besucher sind selten. Den Kometen 3I/Atlas kann man jetzt noch für kurze Zeit beobachten, ehe er für immer verschwindet. (Symbolfoto: CeltStudio/Shutterstock)

Overview

  • Fresh off its closest pass to the Sun, 3I/ATLAS is accelerating outward at about 210,000 kilometers per hour on a departure trajectory.
  • The Virtual Telescope Project plans a free YouTube broadcast on Nov. 19, offering a weather‑dependent view via robotic telescopes in Italy.
  • NASA projects the comet’s nearest approach to Earth on Dec. 19 at roughly 270 million kilometers, a brief window for large observatories to study it.
  • The object is far too faint for the naked eye and challenging for small amateur telescopes, making simulators and trackers the best options for the public.
  • Viewing tools highlighted by coverage include NASA’s Eyes on the Solar System, The Sky Live, and 3Iatlaslive, as the comet is expected to exit the Solar System around January 2026.