Indian Air Force Group Captain Shubhanshu Shukla reached the International Space Station with four others. Prime Minister Modi spoke to him about the experience. This milestone also sparked interest in how communication works between Earth and space without mobile towers.

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• Shubhanshu Shukla became first IAF Group Captain to reach ISS
• Four astronauts accompanied him on historic space journey
• PM Modi spoke with Shukla about his ISS experience
• Shukla described challenges in space, especially sleep issues
• Raised public curiosity: how Earth-space communication happens
• Space lacks wires, towers; satellites ensure connection
• NASA’s SCaN system handles communication tech
• Uses transmitter-network-receiver to decode messages
• Ground antennas on 7 continents support contact
• NASA developing infrared laser tech for future upgrades