space hard MCQ

Auroral emissions on Jupiter are primarily driven by _______ rather than solar wind interaction.

  1. Volcanic plasma from Io
  2. Internal magnetic reconnection
  3. Cosmic ray bombardment
  4. Ring particle charging

Answer: Volcanic plasma from Io

Io's volcanic SO₂ ionizes forming plasma torus; corotation enforcement currents accelerate electrons precipitating into polar atmosphere generating persistent aurorae.

Topic Solar System - Magnetospheres
Exam Relevance UPSC Prelims, General Science