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

All three missions support microgravity research. Axiom-4 (Ax-4) is a private crewed mission to the International Space Station, where Indian astronaut Shubhanshu Shukla conducted microgravity experiments. SpaDeX (Space Docking Experiment) by ISRO demonstrates docking technology in space and also carries payloads including microgravity-based experiments on its POEM-4 platform. Gaganyaan is India's human spaceflight programme aimed at sending astronauts to low Earth orbit, where they will conduct microgravity-based scientific research. Therefore, all three missions encourage and support microgravity research.