Interstellar Visitor 3I/ATLAS Finally Wakes Up, Spewing Organics and Water
#3I/ATLAS #interstellar visitor #comet #organics #water #perihelion #ArXiv #Johns Hopkins University #Carey Lisse
📌 Key Takeaways
- 3I/ATLAS, the third confirmed interstellar visitor, was lost behind the Sun for ~eight months and re‑appeared in December.
- The object is now actively outgassing, with detected organics and water in its coma.
- New papers, including a pre‑print by Carey Lisse (Johns Hopkins University), detail the comet’s post‑perihelion behavior.
- The observations illustrate how interstellar bodies interact with solar radiation and shed material as they enter the Solar System.
📖 Full Retelling
This week, the interstellar visitor 3I/ATLAS, which disappeared behind the Sun during its close approach and remained invisible for about eight months, re‑emerged in December, displaying active outgassing that includes organics and water. Observations and newly released research, including a pre‑print by Carey Lisse and collaborators at Johns Hopkins University, describe how the object behaved after sweeping past the Sun’s heat. The findings help scientists understand the material composition and physical processes of interstellar bodies as they approach the Solar System.
🏷️ Themes
Interstellar Objects, Cometary Science, Astronomical Observation, Planetary Science
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Original Source
There’s been plenty in the news about 3I/ATLAS over the course of the past 8 months. Our third confirmed interstellar visitor went behind the Sun during its closest approach, but reemerged in December with plenty of eyes watching it. Papers describing what it looks like following its closest brush with the power of a star in probably billions of years are starting to come out, including a new one available in pre-print on arXiv from Carey Lisse of Johns Hopkins University and his co-authors, whi
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