The interstellar comet 3I/Atlas, detected by NASA equipment, stunned scientists by halting its movement for days in Mars’ orbit, about 27 million kilometers from the planet, in October 2025. The event, which defies known laws of physics, occurred on a hyperbolic trajectory where objects should not stop. The scientific community is seeking explanations for the phenomenon, which may indicate unknown forces. Telescopes and Martian probes captured detailed images, turning the comet into a natural laboratory.
- Unique composition: high concentration of carbon dioxide in the coma.
- Ancient origin: estimated to be 10 billion years old.
- No risk to Earth: will pass Venus and Jupiter before leaving the Solar System.
Unprecedented phenomenon
The 3I/Atlas, the third interstellar object identified in the Solar System, remained nearly motionless relative to background stars, unusual for its trajectory. NASA ruled out instrumental errors, confirming the accuracy of the records.
The event, observed in October 2025, challenges orbital theories, as the comet’s kinetic energy should prevent any pause.
Possible scientific explanations
Spectroscopic data revealed subtle vibrations in the comet’s nucleus during its immobility. One hypothesis suggests interaction with magnetic fields or interstellar plasma, which could have caused the effect.
The presence of metallic grains on the 3I/Atlas surface supports the theory of a temporary electromagnetic anchor.
Another possibility involves symmetrical microplumes of gas, rare in comets.
These factors indicate a more complex internal structure than that of known comets.
Chemical composition and origins
Analysis of the 3I/Atlas coma revealed a predominance of carbon dioxide and low water content. This suggests formation in cold regions of a distant stellar system.
The nucleus, estimated to be between 320 meters and 5.6 kilometers in diameter, is enveloped by a thick layer of gas and dust.
Data indicate the object is about 10 billion years old, older than the Sun.
The chemical composition offers clues about the formation of stellar systems in remote eras.
Revision of celestial models
The 3I/Atlas pause requires updates to orbital simulation software used to predict trajectories.
Incorporating non-gravitational interactions will be crucial for future calculations.
The phenomenon highlights the need for studies on unknown forces in space.
Comet’s next steps
After resuming movement, the 3I/Atlas is heading toward its perihelion, expected on October 29, 2025.
The comet will pass Venus in November 2025 and Jupiter in March 2026 before leaving the Solar System.
Detailed observations
The proximity to Mars allowed detailed records, with data on brightness and gas emissions still under analysis.
The event turned the 3I/Atlas into a unique subject for studying rare cosmic phenomena.
