PIB TrackerNGLV, SpaDeX, NISAR: PIB maps India's next space technologies
A PIB backgrounder for ESTIC 2026 set out where India's space technology stands - a 30-tonne launcher in development, docking demonstrated, electric propulsion tested - an account of capability and plans, not an announcement of new missions or money.
What happened
- A PIB backgrounder released for ESTIC 2026 - whose Space Science & Technologies session, run by the Department of Space and ISRO, is on 29 October - surveyed India's emerging space technologies, from launchers to Earth observation.
- Launchers: the NGLV, approved in September 2024 at Rs 8,240 crore with three developmental flights, is designed for 30 tonnes to LEO - three times LVM3's 10 tonnes - with a partly reusable 14-tonne variant; Pushpak's three RLV landing experiments ended on 23 June 2024.
- Propulsion: a 300 mN stationary plasma thruster passed a 1,000-hour life test on 27 March 2025 and is to fly on TDS-01; ISROSENE kerosene is being developed for semicryogenic engines; Bellatrix's 1 N green monopropellant thruster flew on PSLV-C58 in January 2024.
- In orbit: SpaDeX docked on 16 January 2025, re-docked autonomously from 15 m on 20 April and transferred power on 21 April 2025 - India is the fourth country to dock, after the US, Russia and China; ISRO and DAE are working on RHUs and RTGs.
- Services and economy: NavIC covers India plus 1,500 km; GSAT-N2 (about 48 Gbps) launched on 19 November 2024; CMS-03 for the Navy on 2 November 2025; NISAR on 30 July 2025; the space economy target is US$44 billion by 2033; NSIL has 118 transfer agreements for 83 technologies.
For Prelims
- Launcher ladder: PSLV - up to 1,750 kg to a 600-km Sun-synchronous polar orbit; GSLV - 2-tonne-class communication satellites, using an indigenous cryogenic upper stage (liquid hydrogen and liquid oxygen) that replaced a Russian-supplied stage; LVM3 - 4 tonnes to GTO and 10 tonnes to LEO; SSLV - about 500 kg to a 500-km orbit.
- Orbits: a Sun-synchronous orbit is near-polar and passes over a place at about the same local solar time, so images are comparable. GTO is an elliptical transfer orbit with its apogee near 35,786 km; the satellite's own apogee motor circularises it into GEO, where its period matches Earth's rotation.
- Reusability and air-breathing: the winged Pushpak made autonomous runway landings on 2 April 2023, 22 March 2024 and 23 June 2024, LEX-03 in harder cross-range and wind. A scramjet carries only fuel and takes oxygen from the air; India's flew at Mach 6 on 28 August 2016, the fourth country to demonstrate one.
- Electric propulsion: it accelerates propellant electrically, making the same orbital changes with far less propellant than chemical engines and freeing mass for payload. Specific impulse measures propulsion efficiency; ISRO's 300 mN thruster offers at least six times that of conventional systems and suits orbit-raising and station-keeping.
- Docking: SpaDeX made India the fourth country to dock two spacecraft in orbit, after the US, Russia and China. Docking underpins the Bharatiya Antariksh Station - first module (BAS-1) targeted by 2028 and a five-module station by 2035 - as well as lunar sample return and future in-orbit servicing such as refuelling.
- NavIC: India's regional satellite navigation system, covering India and up to 1,500 km beyond the mainland, with an open Standard Positioning Service for civilians and an encrypted Restricted Service for authorised users; it also carries emergency warnings for fishermen beyond terrestrial network coverage.
- Earth observation: NISAR (launched 30 July 2025 on GSLV-F16) is the first satellite mission to use two radar frequencies together - NASA's L-band and ISRO's S-band - observing land and ice every 12 days through cloud and darkness. HysIS (29 November 2018) is hyperspectral, launched with 30 foreign satellites from eight countries.
- Space economy: the Department of Space targets US$44 billion by 2033. NewSpace India Limited (NSIL), ISRO's commercial arm, has signed 118 technology-transfer agreements covering 83 technologies; cumulative investment in Indian space start-ups reached about US$618.5 million by 31 March 2026.
For UPSC: NGLV Rs 8,240 crore, 30 t LEO (LVM3 10 t); SpaDeX docked 16 Jan 2025 (4th country); NISAR L+S band, 12-day revisit; space economy target US$44 bn by 2033.
What it is NOT: A backgrounder summarises past results and stated plans; it is not a decision and announces no new money, mission or date. It gives no launch date for the NGLV or TDS-01, no schedule for Gaganyaan or the Bharatiya Antariksh Station, and no figure for India's current space economy against the US$44 billion target. The radioisotope work is described only as requirements discussions with DAE, the start-up investment figure is cumulative rather than annual, and it does not say how many of the 83 transferred technologies are in commercial production.
For Mains
Syllabus: GS3.13 · GS3.12 · Linkage L1
Anchor
India's space programme is shifting from proving it can reach orbit to proving it can work there - docking, refuelling, reusable launch and a station. The backgrounder lists the technologies that shift depends on.
Substantiation (data)
The NGLV: Rs 8,240 crore for 30 tonnes to LEO, three times LVM3. SpaDeX docked in January 2025, the fourth country to do so. A 1,000-hour plasma thruster test, three RLV landings, a Mach 6 scramjet flight, NISAR's dual-band radar, and a US$44 billion space economy target by 2033 with 118 NSIL transfer agreements.
Position
Self-reliance in space is now about cost and cadence. Reusability and electric propulsion cut the price of each kilogram in orbit; docking lets missions be assembled from several launches; and technology transfer through NSIL moves ISRO's work into industry that can build at volume.
Counterpoint
Many of these are demonstrations, not operational systems: the NGLV is in development, the RLV has landed but not flown to orbit, and the plasma thruster has yet to fly. About US$618.5 million of cumulative start-up investment is small against a US$44 billion target, and the backgrounder gives no current baseline.
Way forward
Publish a dated roadmap for the NGLV, TDS-01 and BAS-1; give private launchers and satellite makers steady anchor demand; turn NSIL transfers into production contracts; and report the size of the space economy every year so the 2033 target can be tracked.
Conclusion
The list impresses because most items are firsts of the last three years. Turning them into routine capability - frequent, cheap and built by industry - is the harder second half.
Deploys into: Space technology and self-reliance · Private sector in space · Dual-use technology · Indigenisation of critical technologies
PIB Backgrounder · 2026-10-28 · PRID 2329355 · PIB source ↗