ISRO Gaganyaan Mission 2025 — India's Human Spaceflight Programme: Progress and Significance

Detailed Summary

India's Gaganyaan Mission, helmed by the Indian Space Research Organisation (ISRO), is the country's most ambitious spaceflight programme, aiming to send a crew of Indian astronauts — called Gaganauts (Vyomanauts) — to Low Earth Orbit (LEO) at an altitude of approximately 400 km for a three-day mission and safely return them to Earth. As of May 2025, the mission was progressing with the following key milestones achieved:

• TV-D1 Mission (October 21, 2023) — First uncrewed flight test (Abort Mission Test) to validate the Crew Escape System (CES). Successfully demonstrated the system.
• LVM3 Rocket (previously known as GSLV Mk III) is the designated launch vehicle for Gaganyaan.
• Crew Selection: Four Indian Air Force pilots selected — Group Captain Prasanth Balakrishnan Nair, Group Captain Ajit Krishnan, Group Captain Angad Pratap, and Wing Commander Shubhanshu Shukla — trained in Russia at the Yuri Gagarin Cosmonaut Training Centre.
• G1 Mission (Uncrewed): Planned as the first orbital flight test of the Gaganyaan spacecraft without crew, to test all systems in actual spaceflight conditions.
• G2 Mission: Second uncrewed mission with Vyommitra (a humanoid robot) onboard.
• H1 Mission (Crewed): Final human spaceflight mission — the actual Gaganyaan with astronauts.

Historical Background

India's journey to human spaceflight has a long history:

• 1984 — Rakesh Sharma became the first Indian in space, aboard the Soviet Soyuz T-11 spacecraft.
• 2007 — Space Capsule Recovery Experiment (SRE) — ISRO's first successful space capsule recovery.
• 2008 — Chandrayaan-1 (Moon mission) confirmed water ice on the Moon.
• 2013–2014 — Mars Orbiter Mission (Mangalyaan) — India became the first country to reach Mars orbit on its first attempt.
• 2019 — Gaganyaan mission officially announced; ₹10,000 crore budget approved.
• 2023 — Chandrayaan-3 successfully landed on Moon's south pole (August 23, 2023) — first country to do so.

Tamil Nadu Relevance

ISRO has significant presence in Tamil Nadu:

• Satish Dhawan Space Centre (SDSC-SHAR) — at Sriharikota, Andhra Pradesh (close to Tamil Nadu border) — is ISRO's primary launch facility.
• ISRO Propulsion Complex (IPRC) — located at Mahendragiri, Tamil Nadu (Tirunelveli district) — is responsible for testing liquid propulsion systems for ISRO's rockets including the Gaganyaan mission's Service Module Propulsion System.
• Tamil Nadu-born scientists have played significant roles in ISRO. Former ISRO Chairman K. Sivan is from Melakuniya, a village in Kanyakumari district.

Key Highlights

• Gaganyaan — India's first human spaceflight mission.
• Launch vehicle: LVM3 (GSLV Mk III).
• Target orbit: LEO — ~400 km altitude.
• Mission duration: 3 days.
• Astronauts (Gaganauts/Vyomanauts): 4 IAF pilots selected.
• Crew training venue: Yuri Gagarin Cosmonaut Training Centre, Russia.
• India to become 4th country to independently conduct human spaceflight.
• IPRC Mahendragiri (Tamil Nadu) — key testing facility.

Important Facts Table

Exam-Oriented Notes

• Gaganyaan — India's human spaceflight — ISRO — LVM3 rocket.
• LEO — ~400 km altitude — 3-day mission.
• 4 IAF pilots selected; trained in Russia (Yuri Gagarin Cosmonaut Training Centre).
• India to be 4th country with independent human spaceflight (after USA, Russia, China).
• First Indian in space: Rakesh Sharma — 1984 — Soviet Soyuz T-11.
• Chandrayaan-3 — Moon south pole landing — August 23, 2023 — first country.
• IPRC Mahendragiri — Tamil Nadu — ISRO testing facility.
• ISRO HQ — Bengaluru.

MCQs

MCQ 1

Q: What is the name of ISRO's human spaceflight mission?

• A) Aditya L1
• B) Mangalyaan
• C) Gaganyaan
• D) Chandrayaan

Answer: C) Gaganyaan

Explanation: Gaganyaan is ISRO's human spaceflight programme that aims to send Indian astronauts (Gaganauts/Vyomanauts) to Low Earth Orbit at ~400 km altitude for approximately 3 days and return them safely. India will become the 4th country to independently achieve human spaceflight after USA, Russia, and China.

MCQ 2

Q: The ISRO Propulsion Complex (IPRC) testing rockets for the Gaganyaan mission is located in which district of Tamil Nadu?

• A) Coimbatore
• B) Tirunelveli (Mahendragiri)
• C) Chennai
• D) Salem

Answer: B) Tirunelveli (Mahendragiri)

Explanation: The ISRO Propulsion Complex (IPRC) is located at Mahendragiri in Tamil Nadu's Tirunelveli district. It is responsible for testing liquid propulsion systems for ISRO's rockets, including the Gaganyaan mission's Service Module Propulsion System.

MCQ 3

Q: Who was the first Indian to travel to space?

• A) K. Sivan
• B) Sunita Williams
• C) Rakesh Sharma
• D) S. Somanath

Answer: C) Rakesh Sharma

Explanation: Squadron Leader Rakesh Sharma became the first Indian to travel to space on April 3, 1984, aboard the Soviet Soyuz T-11 spacecraft. When asked by then Prime Minister Indira Gandhi how India looked from space, he famously replied "Saare Jahan Se Acchha" (Better than all the world).