23 August 2026 was India's third National Space Day. The Prime Minister marked it on X with a line about "dreaming even bigger, innovating more and pushing newer frontiers", and the inaugural national event was held at Ahmedabad, with Union Minister Shri Gajendra Singh Shekhawat as chief guest and Dr V. Narayanan, Secretary of the Department of Space and Chairman of ISRO, presiding. The theme this year is "Towards Viksit Bharat: Innovating, Collaborating and Aspiring to Global Space Leadership".
The date is not arbitrary and is worth fixing precisely: it commemorates 23 August 2023, when the Vikram lander of Chandrayaan-3 touched down near the lunar south pole. The day itself was declared by the Prime Minister on 26 August 2023, and first observed in 2024.
The Press Information Bureau also released, on the same day, an English rendering of the Prime Minister's interaction with space startup CEOs — a conversation that ranged over orbital debris removal, in-space docking and refuelling, satellites that manufacture pharmaceuticals, and a global ground-station network. Three years ago the space story was one agency's landing. This year it is an industry.
The landing, in numbers
Chandrayaan-3 lifted off on 14 July 2023 from the Satish Dhawan Space Centre, Sriharikota, on an LVM3-M4. Total mission cost was about ₹615 crore. Soft landing followed on 23 August 2023, making India the fourth country to land softly on the Moon — after the USSR, the USA and China — and the first anywhere in the south polar region.
The Vikram lander carried ChaSTE, which measured the thermal profile of the top few centimetres of lunar soil and found a far steeper temperature gradient with depth than expected; ILSA, a seismometer; RAMBHA-LP, a Langmuir probe for near-surface plasma; and LRA, a NASA laser retroreflector left behind as a permanent ranging target. The Pragyan rover — 26 kg, six-wheeled, solar-powered — carried LIBS and APXS, which together made the first in-situ elemental measurements ever taken near the lunar south pole and confirmed the presence of sulphur, along with aluminium, calcium, iron, chromium, titanium, manganese, silicon and oxygen.
The mission was designed for one lunar day, roughly 14 Earth days, and that is a physics point rather than a scheduling one. The Moon is tidally locked to Earth with a rotation period of about 27.3 days, so a solar-powered lander at a fixed longitude gets 14 days of sunlight followed by 14 days of darkness at temperatures below −200°C. Neither Vikram nor Pragyan was designed to survive that night, and neither woke up. The orbital and thermal reasoning behind this is the same material covered in the NDA physics notes.
The comparison with Chandrayaan-2, whose lander crashed in September 2019 during fine braking, is the part worth understanding rather than memorising. Chandrayaan-3 carried no orbiter of its own — it used the still-functioning Chandrayaan-2 orbiter — and put the saved mass into more propellant, stronger landing legs, a wider target ellipse of about 4 km × 2.4 km, and a shift to failure-based design: engineering the lander to complete the descent even if a sensor or an engine failed, rather than assuming success.
Why the south polar region, and not the equator
Every earlier soft landing went to comparatively forgiving equatorial or mid-latitude terrain. China's Chang'e-4 broke new ground in 2019 by landing on the far side, in Von Kármán crater at about 45.5°S, but that is still a long way short of the pole. India went to a much harder place, for a specific reason.
The Moon's axis is tilted only about 1.5° to its orbital plane. Because of that near-vertical axis, the Sun never rises far above the horizon at the poles, and the floors of some polar craters have not seen sunlight for billions of years. These permanently shadowed regions (PSRs) are cold traps, at temperatures around −175°C, cold enough for water ice to survive indefinitely.
India has a direct claim on this science. Chandrayaan-1, launched on 22 October 2008, carried NASA's Moon Mineralogy Mapper (M3), whose data provided the evidence for water and hydroxyl on the lunar surface and, in later analysis, direct evidence of surface-exposed water ice in the polar regions. NASA's LCROSS impact experiment in 2009 confirmed water in the ejected debris.
Why any of that matters practically: water on the Moon means drinking water, breathable oxygen, and — by electrolysis — hydrogen and oxygen rocket propellant manufactured on site rather than hauled up from Earth. That is in-situ resource utilisation, and it is the difference between visiting the Moon and staying there. The south polar region also exposes some of the oldest terrain in the solar system, in and around the South Pole–Aitken basin.
The costs are real. Grazing sunlight means long shadows, poor illumination for hazard-detection cameras, awkward solar-panel geometry and hard thermal management. And because NASA's Artemis programme is targeting the same narrow band of terrain, south polar site selection has become a matter of strategic positioning as much as science — the sort of overlap between technology and national power that recurs across the NDA general-knowledge syllabus.
Statio Shiv Shakti, and how a lunar name is made
The Prime Minister announced on 26 August 2023 that the touchdown point would be called Shiv Shakti Point. Names on other worlds are not, however, in any government's gift: they are approved by the International Astronomical Union (IAU), whose Working Group for Planetary System Nomenclature formally approved Statio Shiv Shakti on 19 March 2024.
The site sits at roughly 69.37°S, 32.32°E, between the craters Manzinus C and Simpelius N, about 600 km from the pole itself. The Latin "Statio" follows a single precedent — Statio Tranquillitatis, the Apollo 11 landing site. India has one other lunar name: Tiranga Point, for the impact site of Chandrayaan-2's lander.
The roadmap ISRO is now committed to
The dates and outlays below are the ones most likely to be asked.
| Mission | Status and figures |
|---|---|
| Gaganyaan | Revised scope approved September 2024, total outlay ₹20,193 crore over 8 missions, including precursor flights for the space station |
| Chandrayaan-4 | Approved 18 September 2024, ₹2,104.06 crore — lunar sample return, demonstrating docking, undocking and safe Earth re-entry |
| Chandrayaan-5 / LUPEX | ISRO–JAXA, approved March 2025 — ISRO lander, JAXA 350 kg rover, launch on Japan's H3, to drill for polar water ice |
| Venus Orbiter Mission | ₹1,236 crore, launch window March 2028 |
| NGLV | Next Generation Launch Vehicle — up to 30 tonnes to low Earth orbit, about 3 times LVM3 payload at roughly 1.5 times the cost |
| Bharatiya Antariksh Station | First module targeted 2028, fully operational 2035 |
| Crewed lunar landing | Target 2040 |
On Gaganyaan timing, be careful and state both positions. The official target remains the first crewed flight in 2027, preceded by uncrewed missions — G1 carrying the half-humanoid robot Vyommitra. But ISRO's Chairman has publicly flagged that G1 may slip to the third quarter of 2027, which would push the crewed flight later. The programme already has one major milestone behind it: the TV-D1 in-flight abort test of the Crew Escape System on 21 October 2023. The four astronaut-designates are Group Captains Prashanth Balakrishnan Nair, Ajit Krishnan, Angad Pratap and Shubhanshu Shukla — and Shukla flew to the International Space Station on Axiom-4 in June 2025, becoming the second Indian in space after Rakesh Sharma in 1984.
One capability ties this whole table together. SpaDeX, launched on a PSLV on 30 December 2024, docked two roughly 220 kg spacecraft in orbit on 16 January 2025 and made India the fourth country to demonstrate space docking, after the USA, Russia and China. Chandrayaan-4's sample return needs docking. So does assembling a space station module by module. SpaDeX is not a standalone stunt; it is the enabling technology for everything above it.
The private layer: from Vikram-S to Vikram-1
The 2020 reforms created two bodies that are constantly confused, and the distinction is a reliable question.
IN-SPACe — the Indian National Space Promotion and Authorisation Centre, headquartered at Ahmedabad, inaugurated 10 June 2022, under the Department of Space — is the single-window regulator and authoriser for private space activity. NSIL, NewSpace India Limited, incorporated on 6 March 2019, is a CPSE and the commercial arm of ISRO, which took over that role from Antrix Corporation (1992). Regulator versus commercial arm: that is the whole distinction. The Indian Space Policy 2023 set out both roles, and FDI rules were liberalised in February 2024 — 100% for satellite components and the ground segment, 74% on the automatic route for satellite manufacturing and operation, and 49% automatic for launch vehicles and spaceports.
The results are now flying. Skyroot Aerospace launched Vikram-S on 18 November 2022 under Mission Prarambh — India's first privately developed rocket, a 545 kg, 6 m suborbital vehicle that reached a peak altitude of about 88.8 km carrying three payloads. On 18 July 2026, its orbital-class Vikram-1 flew Mission Aagaman from Sriharikota and placed its payloads in a roughly 450 km orbit — the first privately developed Indian rocket to reach orbit, making India the third country, after the USA and China, with a private orbital launch capability. Skyroot had already become India's first space-technology unicorn in May 2026, raising about $60 million at a valuation above $1.1 billion. Its CEO told the Prime Minister the company is targeting one launch a month by mid-2027 and has taken 8 launch contracts, mostly international, in the month since flying.
Agnikul Cosmos holds a different set of firsts: Agnibaan SOrTeD, flown on 30 May 2024 from Agnikul Launchpad-01 at Sriharikota — India's first private launchpad — powered by Agnilet, a single-piece 3D-printed 6 kN semi-cryogenic engine, and India's first semi-cryogenic engine flight.
The startup CEOs the Prime Minister met sketched what comes next: a robotic spacecraft to capture and de-orbit dead satellites, in-space docking and refuelling aimed at a "fuel station in space", a space-pharma venture manufacturing drugs in microgravity, and a global ground-station network inside 18 months.
🔑 Revision block
The day. 23 August · National Space Day · declared 26 August 2023, first observed 2024, so 2026 is the third edition · theme "Towards Viksit Bharat: Innovating, Collaborating and Aspiring to Global Space Leadership" · national event at Ahmedabad, presided over by Dr V. Narayanan, Chairman ISRO.
The landing. Launch 14 July 2023, LVM3-M4, Sriharikota → soft landing 23 August 2023 → cost about ₹615 crore → 4th country to soft-land, 1st in the south polar region → Vikram lander + Pragyan rover (26 kg) → designed for one lunar day ≈ 14 Earth days.
Payloads to name. Lander — ChaSTE (soil thermal profile) · ILSA (seismic) · RAMBHA-LP (plasma) · LRA (NASA retroreflector). Rover — LIBS and APXS, first in-situ elemental measurements near the south pole, sulphur confirmed.
The name. Shiv Shakti Point announced 26 August 2023 → IAU approved Statio Shiv Shakti on 19 March 2024 → about 69.37°S, 32.32°E, between Manzinus C and Simpelius N · Chandrayaan-2's impact site = Tiranga Point.
Why the south pole. Axial tilt about 1.5° → permanently shadowed regions at roughly −175°C → water ice → drinking water, oxygen, hydrogen–oxygen propellant made on site (ISRU) · Chandrayaan-1 (22 October 2008) carried NASA's M3, the instrument behind the lunar water evidence.
Roadmap figures. Gaganyaan revised outlay ₹20,193 crore, 8 missions, crewed flight targeted 2027 (G1 may slip to Q3 2027) · Chandrayaan-4 18 September 2024, ₹2,104.06 crore, sample return · Chandrayaan-5/LUPEX with JAXA · Venus Orbiter ₹1,236 crore, March 2028 · BAS first module 2028, complete 2035 · Indian on the Moon 2040.
The two bodies. IN-SPACe = single-window authoriser and promoter, Ahmedabad, 10 June 2022. NSIL = commercial arm, CPSE, 6 March 2019, successor to Antrix (1992). Do not swap them.
The private firsts. Vikram-S, 18 November 2022, Mission Prarambh, suborbital, peak about 88.8 km → Vikram-1, 18 July 2026, Mission Aagaman, first Indian private rocket to orbit, India the 3rd country with private orbital launch · Agnibaan SOrTeD, 30 May 2024, first flight from a private launchpad, single-piece 3D-printed semi-cryogenic engine · SpaDeX docking 16 January 2025, India 4th to dock in orbit.
🎯 Practice MCQs
Q1. Chandrayaan-3 was launched by which vehicle, and from where? (a) LVM3-M4 from Satish Dhawan Space Centre, Sriharikota (b) PSLV-C56 from Thumba (c) GSLV-F12 from Sriharikota (d) LVM3-M2 from Vikram Sarabhai Space Centre → (a) — launched 14 July 2023; the landing followed on 23 August 2023.
Q2. The name "Statio Shiv Shakti" for the Chandrayaan-3 landing site was formally approved by: (a) the International Astronomical Union (b) the United Nations Office for Outer Space Affairs (c) NASA (d) the Department of Space → (a) — approved on 19 March 2024, following the Prime Minister's announcement of 26 August 2023.
Q3. Permanently shadowed regions exist near the lunar poles chiefly because the Moon has: (a) a very small axial tilt of about 1.5° (b) no magnetic field (c) a synchronous rotation with Earth (d) an extremely thin atmosphere → (a) — the near-vertical axis keeps the Sun permanently low at the poles, so deep crater floors never receive sunlight.
Q4. Which body is the single-window authorising and promotional agency for private space activity in India? (a) IN-SPACe (b) NSIL (c) Antrix Corporation (d) ISRO Propulsion Complex → (a) — NSIL is the commercial arm; IN-SPACe, headquartered at Ahmedabad, is the authoriser.
Q5. India became the fourth country to demonstrate docking of two spacecraft in orbit through which mission? (a) SpaDeX (b) Gaganyaan TV-D1 (c) Aditya-L1 (d) Chandrayaan-3 → (a) — launched 30 December 2024, docked on 16 January 2025, after the USA, Russia and China.
📋 How this gets asked (PYQ pattern)
Space is one of the most reliably examined blocks in the NDA general-knowledge paper, and it comes in four familiar shapes.
The mission-and-launcher match. Which vehicle carried which spacecraft — Chandrayaan-3 on LVM3, Aditya-L1 and SpaDeX on PSLV, Chandrayaan-1 on PSLV-C11. The distractor is almost always a plausible-sounding wrong launcher, so learn mission and vehicle as one pair.
The "first" item. Fourth to soft-land, first near the south pole, fourth to dock in orbit, third with a private orbital launcher. These are easy marks if the ordinal and the qualifier are both memorised; the standard trap is dropping the qualifier, so that "first to land on the Moon" is offered in place of "first to land near the south pole".
The payload-and-instrument item. ChaSTE, ILSA, RAMBHA-LP, LIBS, APXS matched to what they measure. This is where careless preparation shows, because the acronyms are easy to half-learn.
The institution item. IN-SPACe against NSIL against Antrix, which ministry or department each sits under, and where each is headquartered. ISRO basics belong here too — founded 15 August 1969, the Department of Space created in 1972, Aryabhata launched 19 April 1975, and the first indigenous orbital launch by SLV-3 on 18 July 1980.
The fresh 2026 hook is the pairing of the third National Space Day with Vikram-1's orbital flight on 18 July 2026 and the Prime Minister's meeting with startup founders. Expect items on the Skyroot launch and on the IN-SPACe–NSIL distinction. The likeliest trap of this cycle is a statement calling Vikram-1 "India's first private rocket" — that title belongs to Vikram-S (2022), which was suborbital; Vikram-1 is the first private Indian rocket to reach orbit. As always, this describes the recurring pattern, not any specific past question.
Preparing for the NDA? Space questions are won on exact dates, exact ordinals and the right acronym, not on general awareness. Build that precision with the NDA general-knowledge notes and the physics material, follow the daily NDA current affairs, and prepare with our ex-officer faculty in the upcoming Cavalier courses in Delhi.
✍️ Written by Maj Sunil Chopra — Defence, science and technology faculty at The Cavalier. Reviewed by the Cavalier Faculty Desk. The Cavalier, founded by ex-Army officers, has trained NDA/CDS/SSB aspirants since 2001 (Facebook · YouTube).
Source: PIB / Prime Minister's Office, 23 August 2026. Mission figures, IAU nomenclature, Cabinet outlays and private-sector milestones cross-verified against independent sources; the Gaganyaan schedule is stated as both the official target and the Chairman's flagged slippage.