Astronaut Shubhanshu Shukla highlights the Axiom-4 mission's role in microgravity research. He says it also fuels India's space station ambitions. Shukla speaks at National Space Day celebrations in New Delhi. He emphasizes space's unifying power. Gaganyaan astronauts reflect on spaceflight's lessons for Earth. They stress unity and responsibility. Group Captains Angad Pratap and Ajit Krishnan share their views.