India recently became the fourth country to successfully demonstrate space docking. Which of the following countries had achieved this feat before India?
USA, Russia, China
ISRO's SpaDeX (Space Docking Experiment) mission, launched on 30 December 2024 on PSLV-C60, successfully docked its two satellites SDX01 (Chaser) and SDX02 (Target) on 16 January 2025.
With this, India became the fourth country to achieve space docking. The earlier three were the USA (Gemini 8, 1966), the Soviet Union/Russia (Kosmos 186 and 188, 1967 — the first automatic docking) and China (Shenzhou 8 with Tiangong-1, 2011).
France, Japan and the UK have not independently performed a docking of their own spacecraft in orbit, so those groupings do not fit.
Hence, the answer is USA, Russia, China.
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Reason (R): The SAS was launched from the Sriharikota spaceport, and its terminals were installed in all SAARC countries.
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