space hard mcq

Frame-dragging (Lense-Thirring effect) was confirmed by which satellite experiment?

  1. Gravity Probe B
  2. LAGEOS
  3. MICROSCOPE
  4. GOCE

Answer: Gravity Probe B

Gravity Probe B (2004-2011) measured frame-dragging via gyroscope precession, confirming general relativity prediction within ~20% accuracy.

Topic Astronomy - Relativity
Exam Relevance UPSC Prelims, General Science

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