space medium MCQ

Which mission discovered active cryovolcanism on Triton?

  1. Voyager 1
  2. Voyager 2
  3. Cassini
  4. New Horizons

Answer: Voyager 2

Voyager 2's 1989 Neptune flyby revealed nitrogen geysers on Triton, indicating ongoing geological activity driven by tidal heating or insolation.

Topic Space Missions - Outer Planets
Exam Relevance SSC CGL, UPSC Prelims
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