01 Read
What happened
India's space programme, beginning with Aryabhata in 1975, has grown into a globally competitive capability spanning launch vehicles, remote sensing, navigation, and human spaceflight. ISRO operates the PSLV, GSLV, and LVM3 rocket families and manages the NavIC navigation constellation. The IN-SPACe framework opened space to private players after 2020 reforms. Chandrayaan-3's 2023 south-pole lunar landing and Gaganyaan's upcoming crewed mission mark India's transition from a developing-world space agency to a strategic space power.
02 Understand
Why it matters
India's space sovereignty rests on four pillars the UPSC examiner tests repeatedly: self-reliant launch capability, indigenous satellite systems, institutional architecture, and commercialisation policy.
**Launch Vehicles:** PSLV (Polar Satellite Launch Vehicle) is the workhorse for low-Earth and sun-synchronous orbits. GSLV Mk II uses an indigenous cryogenic engine (CE-7.5), resolving decades of technology-denial after the US refused cryogenic technology transfer in 1992. LVM3 (formerly GSLV Mk III), with its C25 upper stage, is India's heaviest rocket and the vehicle for Gaganyaan.
**Satellite Systems:** Remote sensing via Resourcesat/Cartosat, communication via INSAT/GSAT, and navigation via NavIC (Navigation with Indian Constellation) — a 7-satellite regional system providing coverage over India and 1,500 km beyond its borders. NavIC operates on L5 and S-band frequencies, distinguishing it from GPS.
**Institutional Architecture:** ISRO functions under the Department of Space, which reports directly to the Prime Minister. IN-SPACe (Indian National Space Promotion and Authorisation Centre) was created in 2020 to regulate and promote private sector participation. NewSpace India Limited (NSIL) is the commercial arm.
**Key Milestones:** Chandrayaan-3 landed near the lunar south pole on 23 August 2023 — a world first. Aditya-L1 is India's first solar observatory, inserted into Halo orbit around Lagrange Point 1 in January 2024. Gaganyaan will be India's first crewed orbital mission, targeting 400 km altitude.
The examiner blanks out dates, orbit types, frequency bands, and institutional acronyms — all of which are tested in the 'count correct statements' format.
**Launch Vehicles:** PSLV (Polar Satellite Launch Vehicle) is the workhorse for low-Earth and sun-synchronous orbits. GSLV Mk II uses an indigenous cryogenic engine (CE-7.5), resolving decades of technology-denial after the US refused cryogenic technology transfer in 1992. LVM3 (formerly GSLV Mk III), with its C25 upper stage, is India's heaviest rocket and the vehicle for Gaganyaan.
**Satellite Systems:** Remote sensing via Resourcesat/Cartosat, communication via INSAT/GSAT, and navigation via NavIC (Navigation with Indian Constellation) — a 7-satellite regional system providing coverage over India and 1,500 km beyond its borders. NavIC operates on L5 and S-band frequencies, distinguishing it from GPS.
**Institutional Architecture:** ISRO functions under the Department of Space, which reports directly to the Prime Minister. IN-SPACe (Indian National Space Promotion and Authorisation Centre) was created in 2020 to regulate and promote private sector participation. NewSpace India Limited (NSIL) is the commercial arm.
**Key Milestones:** Chandrayaan-3 landed near the lunar south pole on 23 August 2023 — a world first. Aditya-L1 is India's first solar observatory, inserted into Halo orbit around Lagrange Point 1 in January 2024. Gaganyaan will be India's first crewed orbital mission, targeting 400 km altitude.
The examiner blanks out dates, orbit types, frequency bands, and institutional acronyms — all of which are tested in the 'count correct statements' format.
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