What is the Gaganyaan Mission?

Gaganyaan ("Sky Vehicle" in Sanskrit) is India's first human spaceflight programme, developed by the Indian Space Research Organisation (ISRO). Announced by Prime Minister Narendra Modi on 15 August 2018 (Independence Day), the mission aims to send a crew of 3 Indian astronauts (Gaganauts) to Low Earth Orbit (LEO) at 400 km altitude for a mission duration of up to 3 days and bring them back safely to Earth with a splashdown in the sea.

The programme uses the GSLV Mk III (LVM3) rocket, renamed the Human-rated Launch Vehicle (HLVM3) for crewed flights, equipped with a Crew Escape System (CES) for emergency abort scenarios. The total programme cost is estimated at Rs 12,961 crore (approx. $1.5 billion). Upon success, India will become the fourth nation to independently send humans to space, after Russia (1961), USA (1961), and China (2003).

Four Indian Air Force pilots were selected and trained at the Yuri Gagarin Cosmonaut Training Centre in Russia: Group Captain Prasanth Balakrishnan Nair, Group Captain Ajit Krishnan, Group Captain Angad Pratap, and Wing Commander Shubhanshu Shukla. Notably, Shukla flew to the ISS on Axiom Mission 4 in 2025, becoming the first Indian astronaut candidate to reach space.

Key Technologies Developed

Gaganyaan has driven the development of several critical technologies new to India's space programme: a Crew Module (CM) with a double-walled construction (pressure shell + thermal protection) capable of withstanding re-entry temperatures exceeding 1,600 degrees Celsius; an Environmental Control and Life Support System (ECLSS) for oxygen generation, CO2 removal, temperature/humidity control, and fire suppression; a Crew Escape System (CES) with quick-acting solid rocket motors that can pull the crew module away from the rocket within milliseconds in case of a launch abort; and an orbital module service module providing propulsion, power, and thermal management in orbit. Vyommitra, the half-humanoid robot, is designed to simulate crew activities during uncrewed flights, monitoring cabin parameters, operating switches, and communicating with ground control.

Key Features

# Feature Details
1 Agency ISRO
2 Launch Vehicle HLVM3 (human-rated LVM3/GSLV Mk III)
3 Orbit LEO at 400 km altitude
4 Crew Capacity 3 astronauts
5 Mission Duration Up to 3 days
6 Crew Module 3.7 m diameter, 7 tonnes; designed for sea splashdown
7 Crew Escape System Quick-acting solid motors for launch abort
8 Humanoid Robot Vyommitra — half-humanoid for uncrewed test flights

Current Status / Latest Data

  • Development status: About 90% complete as of October 2025; human-rated launch vehicle, life support, crew safety technologies near completion.
  • G1 (Uncrewed Flight 1): Planned for second half of 2026; will carry humanoid robot Vyommitra to test life support, crew module, and re-entry.
  • G2, G3 (Uncrewed Flights 2 & 3): Planned after G1 to validate all systems before crewed mission.
  • H1 (First Crewed Flight): Targeted for first quarter of 2027 (delayed from original 2022 timeline, partly due to COVID-19 and technical challenges).
  • Test Vehicle Missions: TV-D1 was successfully conducted on 21 October 2023, demonstrating the Crew Escape System at Mach 1.2 conditions.
  • Axiom-4: Shubhanshu Shukla spent time on the ISS in 2025, conducting microgravity experiments — India's first astronaut candidate to reach space.
  • Programme Cost: Rs 12,961 crore (~$1.5 billion).

UPSC Exam Corner

Prelims: Key Facts

  • Gaganyaan announced: 15 August 2018 by PM Modi
  • Launch vehicle: HLVM3 (human-rated GSLV Mk III)
  • Orbit: 400 km LEO; duration: up to 3 days; crew: 3 astronauts
  • Four astronauts: all IAF pilots; trained at Gagarin Centre, Russia
  • Vyommitra: humanoid robot for uncrewed test flights
  • TV-D1 (Crew Escape System test): 21 October 2023
  • Upon success: India becomes 4th country (after Russia, USA, China) for independent human spaceflight
  • Programme cost: Rs 12,961 crore
  • ECLSS: Environmental Control and Life Support System for oxygen, CO2 removal, temperature
  • CES: Crew Escape System with solid rocket motors for launch abort
  • Re-entry temperature: crew module withstands over 1,600 degrees Celsius
  • G1 (uncrewed): 2026; H1 (crewed): Q1 2027
  • Shubhanshu Shukla: flew to ISS on Axiom Mission 4 (2025)

Mains: Probable Themes

  1. "Examine the technological and strategic significance of the Gaganyaan mission for India's space programme."
  2. "What are the key challenges in India's human spaceflight programme and how is ISRO addressing them?"
  3. "Discuss the spin-off benefits of human spaceflight programmes for a developing country like India." — Life support, materials, healthcare tech
  4. "Compare India's Gaganyaan programme with China's Shenzhou programme in terms of timeline, cost, and approach."
  5. "How will Gaganyaan position India in the emerging global space economy?"

Sources: ISRO — Gaganyaan | PIB — Gaganyaan Final Phase | Space.com — Gaganyaan Delay 2027 | Britannica — Gaganyaan