GS Paper - 3 (Space Technology)

China successfully launched a new satellite on 24 October 2021 to test and verify space debris mitigation technologies. It was launched from the Xichang Satellite Launch Centre in southwest China's Sichuan Province.


  1. The satellite, named Shijian-21, was launched by a Long March-3B carrier rocket and it entered the planned orbit successfully.
  2. The satellite will be mainly used to test and verify space debris mitigation technologies, state-run Xinhua news agency reported.

Space debris mitigation in India

  1. ISRO developed its debris environmental models and software to predict the close approach of any of the debris to the functional satellites.
  2. The software are regularly used for the debris risk management of the orbiting spacecraft and launch vehicles.
  3. ISRO recognizes the role of international cooperation in the debris mitigation measures and actively contributes to the efforts of the Inter-Agency Space Debris Coordination Committee (IADC) and United Nations Committee on the Peaceful Uses of Outer Space (UNCOPUOS).