space hard MCQ

New Horizons' flyby of Arrokoth revealed it to be a contact binary formed by _______.

  1. Collisional fragmentation
  2. Gentle accretion in primordial disk
  3. Tidal disruption
  4. Volcanic resurfacing

Answer: Gentle accretion in primordial disk

Arrokoth's bilobate shape with aligned lobes indicates low-speed merger of two planetesimals in cold classical Kuiper Belt, preserving early solar system conditions.

Topic Space Missions - Deep Space
Exam Relevance UPSC Prelims, General Science
More space Questions Back to all questions