Consider the following space missions: I. Axiom-4. II. SpaDeX. III. Gaganyaan. How many of the space missions given above encourage and support micro-gravity research?

I. Axiom-4 — Axiom private astronaut missions to the ISS carry scientific experiments, including micro-gravity research. Verdict: Correct.

II. SpaDeX — ISRO’s Space Docking Experiment is mainly for in-space docking technology, but it also includes experiments relevant to microgravity conditions and supports future orbital research capability. Verdict: Correct.

III. Gaganyaan — India’s human spaceflight mission is explicitly intended to enable microgravity experiments in low-Earth orbit. Verdict: Correct.

Hence, all three missions encourage and support micro-gravity research.