Relevance: GS-3 (Space Technology, Astronomy); Source: LiveMint, Astronomical Survey Data
News
Interstellar comet 3I/Atlas made its closest flyby to Earth on 19 December 2025, allowing global observatories to study a non-Solar System object passing through the inner Solar System.
What Makes 3I/Atlas Important?
- It is the third confirmed interstellar object after 1I/‘Oumuamua and 2I/Borisov.
- Its open hyperbolic trajectory proves it is not bound to the Sun—key criterion for identifying interstellar bodies.
- Such objects carry primordial material from other star systems, offering clues to planet formation beyond the Solar System.
Scientific Significance
- Helps study organic compounds, dust composition, and isotopic signatures unique to extra-solar environments.
- Supports refinement of planetary defence tracking, especially for objects with non-predictable, non-elliptical paths.
- Enhances understanding of stellar neighbourhood dynamics and interstellar medium interactions.
| UPSC Value Box
Hyperbolic Orbit – An orbit with eccentricity greater than 1, indicating the object is travelling faster than solar escape velocity and will not return. Institution: |
Q. With reference to interstellar objects, consider the following statements:
- They are identified primarily through their hyperbolic orbital paths.
- 3I/Atlas is the third interstellar object confirmed by the International Astronomical Union.
- All interstellar objects originate from within the Oort Cloud.
How many statements are correct?
A. One only
B. Two only
C. All three
D. None
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