space medium fill in the blank

Rotovators are rotating tethers that exchange momentum with payloads to enable propellantless _______ transfer.

  1. Interplanetary
  2. Orbit-to-surface/orbit
  3. Interstellar
  4. Lunar-Earth

Answer: Orbit-to-surface/orbit

Rotating tether catches/releases payloads at periapsis/apoapsis transferring orbital energy; enables access to LEO/GEO/lunar surface without rockets.

Topic Space Technology - Future Concepts
Exam Relevance SSC CGL, UPSC Prelims

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