SSC Stenographer 2025 PYQ — Question 49

The correct answer is Option 2: Space docking

Detailed Analysis & Solution

The SpaDex (Space Docking Experiment) is a critical technology demonstrator mission by the Indian Space Research Organisation (ISRO).

Objective: The primary goal is to demonstrate the capability of two spacecraft to approach each other and join (dock) autonomously in orbit.

The Mechanics: The mission involves two small satellites—one acting as a "Chaser" and the other as a "Target." The chaser will perform maneuvers to align and lock with the target satellite.

Significance: This technology is a fundamental building block for several ambitious future projects:

Bharatiya Antariksha Station (BAS): India's upcoming space station requires

docking capabilities to send and receive crew and supply modules.

Chandrayaan-4: A sample return mission where a module from the moon's surface must dock with an orbiter to bring samples back to Earth.

Satellite Refuelling: Allowing old satellites to be refuelled in space to extend their lifespan.

Key Facts for General AwarenessPotential Competition Questions

Q1. Which future ISRO mission specifically requires docking technology to return lunar samples to Earth?

Answer: Chandrayaan-4

Q2. The ability of two spacecraft to find each other and lock together in space is known as:

Answer: Rendezvous and Docking